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# Euler's identity

Euler's identity is often cited as an example of deep mathematical beauty. Three of the basic arithmetic operations occur exactly once each: addition, multiplication, and exponentiation. The identity also links five fundamental mathematical constants: The number 0, the additive identity. The number 1, the multiplicative identity Above all else, Euler's mystical identity is a clever insight into the perfection of the unit circle, by combining complex and diverse subfields of mathematics! In fact, the countless properties of this perfect unit circle are the reasons why Euler's identity has become essential in many applications, like in physics

### Euler's Identit

• Euler's Identity stems naturally from interactions of complex numbers which are numbers composed of two pieces: a real number and an imaginary number; an example is 4+3i
• Euler's Identity. Euler's identity (or theorem'' or formula'') is. (Euler's Identity) To prove'' this, we will first define what we mean by  ''. (The right-hand side, , is assumed to be understood.) Since is just a particular real number, we only really have to explain what we mean by imaginary exponents
• Euler's Identity. Proof. Leonhard Euler was an 18th-century Swiss-born physicist who developed numerous concepts that are indispensable to modern mathematics. A highly prolific mathematician, Euler is considered to be one of the greatest of all time for his inestimable contributions
• • Euler's Identity: 'The Most Beautiful Equation' Euler's identity is often hailed as the most beautiful formula in mathematics. People wear it on T-shirts and get it tattooed on their bodies. But why is that? The identity reads: These three constants are extremely important in mathematics. The identity also involves 0 and 1
• 4 Applications of Euler's formula 4.1 Trigonometric identities Euler's formula allows one to derive the non-trivial trigonometric identities quite simply from the properties of the exponential. For example, the addition for-mulas can be found as follows: cos( 1 + 2) =Re(ei( 1+ 2)) =Re(ei 1ei 2) =Re((cos 1 + isin 1)(cos 2 + isin 2)) =cos 1 cos 2 sin 1 sin

### The Most Beautiful Equation of Math: Euler's Identity

1. Peirce
2. Euler's Identify. For the special case where φ = π: ejπ = cosπ + jsinπ = − 1. Rewritten as. ejπ + 1 = 0. This combines many of the fundamental numbers with mathematical beauty. The number 0, the additive identify. The number 1, the multiplicative identity. The number π, the ratio between a circle's circumference and its diameter
3. Euler's identity is often hailed as the most beautiful formula in mathematics. People wear it on T-shirts and get it tattooed on their bodies. Why? [maths]The identity reads $$e^{i\pi}+1=0,$$ [/maths] Leonhard Euler, 1707-1783. Portrait by Johann Georg Brucker Euler's formula is ubiquitous in mathematics, physics, and engineering. The physicist Richard Feynman called the equation our jewel and the most remarkable formula in mathematics. When x = π, Euler's formula evaluates to e iπ + 1 = 0, which is known as Euler's identity Now, if we particularize Euler's formula to the value of x = π, we get the famous Euler's Identity. By substituting x for π in Euler's formula we get Euler's identity

### Euler's Identity: 'The Most Beautiful Equation' Live Scienc

Euler made a simple observation, viz., that these are indeed the functions for sine and cosine as shown above by the Taylor series representation, which resulted in his amazing formula: eix= cos(x) + isin(x) (4) 2.2 Theoretical Uses of Euler's Identity Although Euler's Identity may be of little interest to the less informed, its impac The Euler formula, sometimes also called the Euler identity (e.g., Trott 2004, p. 174), states e^(ix)=cosx+isinx, (1) where i is the imaginary unit. Note that Euler's polyhedral formula is sometimes also called the Euler formula, as is the Euler curvature formula. The equivalent expression ix=ln(cosx+isinx) (2) had previously been published by Cotes (1714) We obtain Euler's identity by starting with Euler's formula $e^{ix} = \cos x + i \sin x$ and by setting $x = \pi$ and sending the subsequent $-1$ to the left-hand side. The intermediate form $e^{i \pi} = -1$ is common in the context of trigonometric unit circle in the complex plane: it corresponds to the point on the unit circle whose angle with respect to the positive real axis is $\pi$ Euler's identity is the famous mathematical equation e^(i*pi) + 1 = 0 where e is Euler's number, approximately equal to 2.71828, i is the imaginary number where i^2 = -1, and pi is the ratio of a.

Euler's Identity is written simply as: e^(iπ) + 1 = 0, it comprises the five most important mathematical constants, and it is an equation that has been compared to a Shakespearean sonnet. The physicist Richard Feynman called it the most remarkable formula in mathematics. The Five important mathematical constants in Euler's Identity Euler's identity first appeared in his book Introductio in analysin infinitorum in 1748.. Later, people saw that the formula also had relationships with the trigonometric functions sine and. Euler's identity is said to be the most beautiful theorem in mathematics. It is absolutely paradoxical; we cannot understand it, and we don't know what it m.. Aha! We can use Euler's Formula to draw the rotation we need: Start with 1.0, which is at 0 degrees. Multiply by e i a, which rotates by a. Multiply by e i b, which rotates by b. Final position = 1.0 ⋅ e i a ⋅ e i b = e i ( a + b), or 1.0 at the angle (a+b) The complex exponential e i ( a + b) is pretty gnarly

### Proof of Euler's Identity Mathematics of the DF

In mathematics, Euler's identity (also known as Euler's equation) is the equality: ei. π {\displaystyle \pi } + 1 = 0. where. e is Euler's number, the base of natural logarithms, i is the imaginary unit, which satisfies i2 = −1, and. π {\displaystyle \pi Euler's identity. Euler has been described as the Mozart of maths. His most famous equation links all the most important numbers. Most of modern mathematics and physics derives from work of.

Euler's identity is named after the Swiss mathematician Leonard Euler. It is not clear that he invented it himself. Respondents to a Physics World poll called the identity the most profound mathematical statement ever written, uncanny and sublime, filled with cosmic beauty and mind-blowing Euler's identity has been voted the greatest equation ever in a poll of physicists conducted in 2004. The late great Richard Feynman called it our jewel and the most remarkable formula in mathematics Euler's identity, or Euler's equation, named after Leonhard Euler, is the equation of mathematical analysis + = Quotes [ edit ] Gentlemen, that is surely true, it is absolutely paradoxical ; we cannot understand it, and we don't know what it means We can use Euler's theorem to express sine and cosine in terms of the complex exponential function as s i n c o s ������ = 1 2 ������ ������ − ������ , ������ = 1 2 ������ + ������ . Using these formulas, we can derive further trigonometric identities, such as the sum to product formulas and formulas for expressing powers of sine and cosine and products.

Euler's Formula for Complex Numbers (There is another Euler's Formula about Geometry, this page is about the one used in Complex Numbers) First, you may have seen the famous Euler's Identity: e i π + 1 = 0. It seems absolutely magical that such a neat equation combines Next Episode: https://www.youtube.com/watch?v=FZtmJLI90O0&list=PLWMUMyAolbNuWse5uM3HBwkrJEVsWOLd6&index=9http://howthefouriertransformworks.com/View the whol.. Euler's Identity. Starting at the multiplicative identity z = 1, travelling at the velocity iz for the length of time π, and adding 1, one arrives at 0. is pi, the ratio of the circumference of a circle to its diameter. Euler's identity is also sometimes called Euler's equation # Euler's Identity # Colorized Definition \newcommand {\growth} {\color Intuitive Understanding of Euler's Formula (opens new window) Math and Analogies (opens new window) ← Euler's Formula Fourier Transform →. Euler's identity proof (Taylor series) There are a number of ways to derive Euler's identity. Some derivations are more elegant than others. The one I present is well known. And while not necessarily the nicest or most elegant or most rigorous, I think it is the one proof that is most deep and historical and dramatic I know that Euler's identity is widely regarded as the most beautiful theorem in mathematics. In my opinion, the truly beautiful concept involved here is Euler's formula: $e^{ix} = \cos x + i \sin x.$ It unifies algebra, trigonometry, complex numbers, and calculus Euler's Identity below is regarded as one of the most beautiful equations in mathematics as it combines five of the most important constants in mathematics: I'm going to explore whether we can still see this relationship hold when we represent complex numbers as matrices It combines the most beautiful constants known to mankind. * e, a number known for occurring various aspects of mathematics, most notably as the base of natural logarithms, such that $ln(e^x) = x$Equal to approximately 2.71828. Underli..

### Euler's Identity: 'The Most Beautiful Theorem In

• There is one difference that arises in solving Euler's identity for standard trigonometric functions and hyperbolic trigonometric functions. The difference is that the imaginary component does not exist in the solution to the hyperbolic trigonometric function. The intuition is that when you plot e i x, the graph oscillates between 1 and − 1.
• Euler's Formula. Euler's identity is a simpler version of Euler's Formula wither the value of theta is pi. Before delving into the formula itself, let us familiarize ourselves with the 5 values in the identity
• Euler's formula states that .When , the formula becomes known as Euler's identity.. An easy derivation of Euler's formula is given in  and . According to Maclaurin series (a special case of taylor expansion when ), . Therefore, replacing with , we have. By Maclaurin series, we also hav
• In mathematics, Euler's identity (also known as Euler's equation) is the equality: ei. π {\displaystyle \pi } + 1 = 0. where. e is Euler's number, the base of natural logarithms, i is the imaginary unit, which satisfies i2 = −1, and. π {\displaystyle \pi } is pi, the ratio of the circumference of a circle to its diameter
• The focus of Jeffries' tweet was the Euler Identity, shown here. I wrote about the beauty I see in this identity in an article published in the Wabash Magazine in 2002, in conjunction with a guest lecture I gave at Wabash College's Center for Inquiry in the Liberal Arts.. Having spent twelve years in the middle of my career at elite liberal arts colleges (Colby College in Maine from 1989.

### The Most Beautiful Formula, Euler's Identity: What Is It

Euler's identity, , has been called the most beautiful equation in mathematics.It unites the most basic numbers of mathematics: (the base of the natural logarithm), (the imaginary unit = ), (the ratio of the circumference of a circle to its diameter), 1 (the multiplicative identity), and 0 (the additive identity) with the basic arithmetic operations: addition, multiplication and exponentiation. Euler Identity. For , (1) Both of these have closed form representation (2) where is a q-Pochhammer symbol. Expanding and taking a series expansion about zero for either side gives (3 Euler's identity has been voted the greatest equation ever in a poll of physicists conducted in 2004. The late great Richard Feynman called it our jewel and the most remarkable formula in mathematics The identity I don't believe comes up in a large way anywhere. It's just a special case of Euler's formula where $x = \pi$. The remarkableness of the formula is that it contains addition, exponentiation, multiplication, two irrational numbers (and two very important ones at that), the imaginary unit, 0, and 1

A special, and quite fascinating, consequence of Euler's formula is the identity , which relates five of the most fundamental numbers in all of mathematics: e, i, pi, 0, and 1. Proof 1. The proof of Euler's formula can be shown using the technique from calculus known as Taylor series Euler Formula and Euler Identity interactive graph. Below is an interactive graph that allows you to explore the concepts behind Euler's famous - and extraordinary - formula: eiθ = cos ( θ) + i sin ( θ) When we set θ = π, we get the classic Euler's Identity: eiπ + 1 = 0. Euler's Formula is used in many scientific and engineering fields As it says on Wikipedia, . [Euler's identity] shows a profound connection between the most fundamental numbers in mathematics.. However, I believe the formula is more beautiful than the identity. To express my point I will analogize to the Pythagorean Theorem. Imagine I have a friend who is in awe that 3²+4²=5² Follow/Fav Euler's Identity. By: DSieya It is absolutely paradoxical; we cannot understand it, and we don't know what it means, but we have proved it, and therefore we know it must be the truth.- Benjamin Peirce. sheldon/penny, oneshot Euler's Identity: eiπ + 1 = 0 Richard Feynman described it as one of the most remarkable, almost astounding, formulas in all of mathematics - and indeed this could be seen to be true - it contains the five most important numbers in all mathematics: e - the base of the natural logarithm - a numbe

### Intuitive Understanding Of Euler's Formula - BetterExplaine

Even though Euler's identity is named after Euler, there is some debate on whether he was the first to produce the exact formula and to use it, since in Indroductio he wrote down e ix = cos x + i sin x but never took the final step (which is easy and simple) to write the identity above. In addition, Euler's identity can be easily deduced. A Geometric Proof of Euler's Identity. Author: Tyler Haslam. Topic: Complex Numbers. A geometric proof of the identity, e^(pi*i)=-1. As n increases the complex number (1+pi*i/n)^n approaches -1+0i. Incidentally, if you change the pi to a 2 and look at (1+Ai/n)^n, you see it approaching cos(A)+i sin(A). This is because as n gets larger, the.

### Proof of Euler's formula, identify and its relation to

Euler's Identity -7- Robertson Descartes' system of analytic geometry, which converted geometrical positions into pairs of numbers (i.e., coordinates) and geometrical shapes into equations, was a magical solution. Within fifty years, analytic geometry led to the simultaneous discovery of calculus by Isaac Newton and Gottfried Leibniz Compute answers using Wolfram's breakthrough technology & knowledgebase, relied on by millions of students & professionals. For math, science, nutrition, history. Die nach Leonhard Euler benannte eulersche Formel bzw. Eulerformel, in manchen Quellen auch eulersche Relation, ist eine Gleichung, die eine grundsätzliche Verbindung zwischen den trigonometrischen Funktionen und den komplexen Exponentialfunktionen mittels komplexer Zahlen darstellt Without Euler's identity, this integration requires the use of integration by parts twice, followed by algebric manipulation. Also, the solution of this standard differential equation is made simple using Euler's identity: mx&&+bx&+kx =0 Taking solutions of the form x = Cest: ms2 +bs+k =0 m k m b m b s =− ± − 2 2 2

### Maths in a minute: Euler's identity plus

Euler's contributions extended much farther than this identity (Euler's characteristic, for one, involving the vertices, faces, and edges of polyhedrons) but it is widely considered to be one of the most monumental discoveries in the history of mathematics; it even excites the same areas of that brain that art and music do The year began with a spectacular formation in oilseed rape (canola) at Stonehenge, it was followed by a maze-like circle containing the mathematical equation known as Euler's Identity; reportedly the most beautiful in mathematics! June saw the incredible snowflake at White Sheet Hill, then July brought the stunning Cley Hill cubed cross Proof of Euler's Identity. This chapter outlines the proof of Euler's Identity, which is an important tool for working with complex numbers. It is one of the critical elements of the DFT definition that we need to understand. Subsections. Euler's Identity Euler's Identity. 664 likes. It is absolutely paradoxical; we cannot understand it, and we don't know what it means, but we have proved it, and therefore we know it must be the truth. --Benjamin Peirc --- title: Euler's Identity 的由來 path: Euler's Identity 的由來 --- {%hackmd @RintarouTW/About %} # Euler's Identity 的由來 $$e^{i\pi} + 1 = 0$$ Euler 恆等式究竟怎麼來的，有的人用泰勒展開式去證明，個人總覺得不太恰當，因為泰勒展開式 (除麥克羅琳外) 比歐拉恆等式要晚，可以這麼證明恆等式是對的，和它究竟是.

### Euler's formula - Wikipedi

1. Shop high-quality unique Euler Identity T-Shirts designed and sold by independent artists. Available in a range of colours and styles for men, women, and everyone
2. 1. An Amusing Equation: From Euler's formula with angle , it follows that the equation: ei +1 = 0 (2) which involves ﬁve interesting math values in one short equation. 2. Trig Identities: The notation suggests that the following formula ought to hold: eis ¢eit = ei(s+t) (3) which converts to the addition laws for cos and sin in.
3. Euler's formula relates the complex exponential to the cosine and sine functions. This formula is the most important tool in AC analysis. It is why electrical engineers need to understand complex numbers. Created by Willy McAllister. Google Classroom Facebook Twitter

Trig Identities and Euler's Formula Euler's Formula makes it really easy to prove complicated trig identities, because we now get to use properties of exponents to help us out. Let me show you a quick example: $sin(u \pm v) = sin(u)cos(v) \pm cos(u)sin(v)\ Euler's identity. 919 likes. Most Beautiful Equation in Mathematic The Euler identity is an easy consequence of the Euler formula, taking qp= . The second closely related formula is DeMoivre's formula: (cosq+isinq)n =+cosniqqsin. 1 See Euler's Greatest Hits, How Euler Did It, February 2006, or pages 1 -5 of your columnist's new book, How Euler Di ### Euler's Identity. The Most Beautiful Mathematical Formula .. 1. In mathematics, Euler's identity[n 1] is the equalit 2. Sandifer, C. Edward (2007), Euler's Greatest Hits, Mathematical Association of America ISBN 978--88385-563-8 Stipp, David, A Most Elegant Equation: Euler's formula and the beauty of mathematics, Basic Books , 201 3. However, i do not think this is the correct way to prove Euler's formula during the inductive step. induction planar-graphs platonic-solids. Share. Cite. Follow edited May 10 '19 at 12:19. Marko Lalovic. 304 1 1 silver badge 8 8 bronze badges. asked Mar 18 '19 at 9:47. Code4life Code4life 4. Quaternion.Euler. Leave feedback. Suggest a change. Success! Thank you for helping us improve the quality of Unity Documentation. Although we cannot accept all submissions, we do read each suggested change from our users and will make updates where applicable. Close. Submission failed 5. atis abscissa = x, applicata = y, arcu curvæ s, & posita ds constante, radiu 6. High quality Eulers Identity-inspired gifts and merchandise. T-shirts, posters, stickers, home decor, and more, designed and sold by independent artists around the world. All orders are custom made and most ship worldwide within 24 hours Euler's formula $\mathrm e^{\mathrm i\varphi}=\cos\varphi+\mathrm i\sin\varphi$ illustrated in the complex plane. Originally created by gunther using xfig, recreated in Inkscape by Wereon. You cannot overwrite this file. File usage on Commons. The following 3 pages use this file Prijevodi fraza EULER'S NUMBER s engleskog na hrvatski i primjeri upotrebe riječi EULER'S NUMBER u rečenici s njihovim prijevodima: Twentieth decimal of Euler's number Be Unique. Shop leonhard euler stickers created by independent artists from around the globe. We print the highest quality leonhard euler stickers on the interne ### Video: Euler Formula -- from Wolfram MathWorl ### Euler's Formula: A Complete Guide Math Vaul Euler's identity is a special case (set $$x=\pi$$) of Euler's formula, which is \[e^{ix}=\cos x+i\sin x$ This equation is just as stunning as Euler's identity itself. The meaning of the right-hand side becomes clear if we combine trigonometry with complex numbers. Take the complex number $$c=a+bi$$ Euler's Identity states that e i π + 1 = 0, three seemingly unrelated numbers, two irrational and one imaginary (e, 2.71828; π, 3.14159; and i, √-1 respectively) can be put into an equation and an integer produced. On the face of it, this seems remarkable, an act of wizardry, but it is nothing more than an illusion. Previously the complex plane was mentioned concerning the. Euler's identity unifies five of the fundamental ingredients of mathematics: 0, 1, π e, and i.. The value e is the foundation of the natural logarithm. But even the most technically astute engineer or mathematician can be forgiven for not recognizing it

According to Euler's four square identity, the product of any two numbers a and b can be expressed as a sum of four squares if a and b both can individually be expressed as the sum of four squares. Mathematically, if a = and b =. Then, a * b =. where c1, c2, c3, c4, d1, d2, d3, d4, e1, e2, e3, e4 are any integer NEW DISCOVERY: Is 'Euler's Identity' ((e^iπ)+1 = 0) really the Most Beautiful Equation in Mathematics? It requires an Imaginary (-1^.5) and Complex plane of numbers.....but is e^π pointing to something even more simple and sophisticated at the same time? What if we perhaps replace i (Root-1) with the Fractal Root of -1? Talal and I wrote a white paper on Fractal Roots a couple years ago. Euler's identity. Natural Language; Math Input. NEW Use textbook math notation to enter your math. Try it v−e+f = 2 v − e + f = 2. We will soon see that this really is a theorem. The equation v−e+f = 2 v − e + f = 2 is called Euler's formula for planar graphs. To prove this, we will want to somehow capture the idea of building up more complicated graphs from simpler ones. That is a job for mathematical induction

### Euler's Identity: Definition & Example - Video & Lesson

Euler's Identity is actually a special case of the more general identity that the nth roots of unity, for n > 1, add up to 0: Euler's identity is the case where n = 2. In another field of mathematics, by using quaternion exponentiation, one can show that a similar identity also applies to quaternions Euler's identity uses each of 0,1,pi,e,i only once. 0 and 1 are the two most imperative whole numbers. pi and e are the two most popular and conventional irrational numbers  ### The Most Beautiful Equation

1. One of the more famous identities that Euler discovered was the identity relating the five great constants of mathematics: Euler's number, pi, the imaginary unit, the real unit number, 1 zero, 0 These five constants of nature, Euler discovered, could neatly be tied together in a single, simple equation: Note that the identity also uses three fundamental operations of arithmetic (as extended to.
2. Euler's identity; Although time for teaching Maths HL is very precious and a teacher should endeavour to not use up valuable class time for unnecessary topics and activities, I do feel strongly that Maths HL students should (and deserve to) be exposed to proofs and/or demonstrations of statements and results that are too often used without any.
3. An educational initiative dedicated to Leonhard Euler, the Euler Identity and the Euler Formul
4. De identiteit van Euler, genoemd naar de Zwitserse wiskundige Leonhard Euler, luidt: + = Het is een speciaal geval van de formule van Euler: = ⁡ + ⁡ Door in te vullen in deze vergelijking verkrijgt men namelijk = ⁡ + ⁡ = + en dus + = In navolging van Richard Feynman wordt de vergelijking + = door wiskundigen wel De mooiste formule binnen de wiskunde genoemd, omdat zij zonder verdere.
5. In this post, I'm going to prove Euler's identity using Taylor series expansion as the tool. Euler's identity says that. e^(iπ) + 1 = 0. e: Euler's number (approximately 2.71828) i: imaginary number (defined as the square root of -1) π: pi (approximately 3.14159) What is a T a ylor series? A Taylor series is a function's expansion.
6. Euler's identity is a beautiful example of the quantized mathematics of change. This quantization of mathematics allows us to define very precise coarse macro step-sizes (both linear and angular) using integer amounts of the quantized micro units (1+ħ) and (1+i π ħ)
7. Euler's identity, given above, is a wonderful and mysterious result. The identity binds geometry with algebra and often simplifies the mathematics of physics and engineering (see phasor for an example). In some sense Euler's identity is more a definition than a result--one could define e iy in other ways. However, the chosen definition is.

### The Most Beautiful Theorem in Mathematics: Euler's Identit

1. Euler's identity is only a special case of Euler's formula, i.e., Euler's formula with x = π gives us Euler's identity: e^(iπ) = -1. This is cute but Euler's formula is truly beautiful. In fact with x = τ = 2π, we get another cute result: e^(iτ) = 1. From Chapter 22 of The Feynman Lectures on Physics, Volume I
2. Related to Euler's identity is DeMoivre's theorem: ()cosθ+isinθn =cosnθ+isin nθ The proof of DeMoivre's theorem is done using mathematical induction and trigonometric identities. For the case of n = 2: ()cosθ+isinθ2 =cos2 θ+2isinθcosθ+i2 sin2 θ ()cosθ+isinθ2 =(cos2 θ−sin2 θ)+i(2sinθcosθ) ()cosθ+isinθ2 =cos2θ+isin 2�
3. The Euler's identity (e iπ +1=0) is overrated. In fact there are only a few of the most important costants in maths. I think we can do better than that: (iπ 0)0+φ-1/φ=1+Ωe Ω +e πi contains 0, 1, φ, e, Ω, π and i, 7 of the most important numbers in maths: 0 is the number of the nothing and the balance (e. g. in phisics when the net force is 0,then the object is still or is moving at a.
4. Euler discovered that if Π was substituted for x in the trigonometric identity e (i*Π) = cos(x) + i*sin(x), the result was what we now know as Euler's formula. In addition to relating these five fundamental constants, the formula also demonstrates that raising an irrational number to the power of an imaginary irrational number can result in a.
5. Euler's identity: Math geeks extol its beauty, even finding in it hints of a myste­rious connected­ness in the universe. It's on tank tops and coffee mugs. Aliens, apparently, carve it into.
6. 2.3 Euler's identity. I would be remiss in this manifesto not to address Euler's identity, sometimes called the most beautiful equation in mathematics. This identity involves complex exponentiation, which is deeply connected both to the circle functions and to the geometry of the circle itself    Euler's identity, sometimes called Euler's equation, is this equation: + = It features the following mathematical constants: , pi, Euler's Number, imaginary unit = It also features three of the basic mathematical operations: addition, multiplication and exponentiation The relationship between the Cartesian and polar form is given by Euler's Formula, which states that, e φ i = c o s ( φ) + s i n ( φ) i. Euler's formula establishes the relationship between e and the unit-circle on the complex plane. It tells us that e raised to any imaginary number will produce a point on the unit circle This article about complex numbers is a little advanced. See here for a basic introduction to complex numbers. Many things in mathematics are named after Leonhard Euler, who probably was the most prolific mathematician of all time. In this article we explore a formula carrying his name which reveals a beautiful relationship between the exponential function and trigonometric functions. It also.