# applications of complex numbers in physics

## 20 Jan applications of complex numbers in physics

. And the existence of this larger set has concrete implications for expressions on the subset.So, when we write down any equation at all, we must be careful. I read in an article that the theory of Electromagnetism makes use of Complex Numbers. Without a loss of generality, he was therefore solving the equations of the type, Vystavil The product is not a commutator (although it's related to it). Dear Huge, your "the" instead of "a" was a very important mistake, one that summarizes your whole misunderstanding of the importance of complex numbers.This article was about the importance of complex numbers in physics and the branches of mathematics that are used in physics. Clifford algebra (or geometric algebra) has been very successful in reformulating every theory of physics into the same mathematical language. . But Clifford algebras are at most a name given by one particular anticommutator that appears once when we learn about spinors etc. . . . But this is well known to string theorists, why are you asking? It's not being manipulated with in numerous ways like we manipulate complex numbers or Lie algebras.The Clifford algebras are the kind of objects invented by mathematicians who predetermined that a particular generalization should be ever more important except that the subsequent research showed the assumption invalid and some people are unwilling to see this fact. As before there are special ways you manipulate complex numbers in this form. Despite these existing only in the complex plane, their effects can be felt for the real function. . Complex numbers and complex analysis show up everywhere in mathematics and physics. . They may be more complicated etc. Testing Identities Using Computer Code. We may mean for it to hold for some restricted class of numbers, but there may be much wider implications. Complex Numbers and Complex Functions A complex number zcan be written as z= x+ iy or z= rei˚ with r 0 where i= p 1, and x, y, r, and ˚are real numbers. Previously, you wrote "Generalizing to higher dimension people expect that the generalization of the gamma matrices will also be a Clifford algebra. Algebraically, complex numbers are closed. results by setting , i.e. append (cos (2 * pi * n / N) + 1 j * sin (2 * pi * n / N)) values = [] for n in range (N): values. derived using the properties of the real function. It's mathematically the same thing. Main Article: Complex Plane Complex numbers are often represented on the complex plane, sometimes known as the Argand plane or Argand diagram.In the complex plane, there are a real axis and a perpendicular, imaginary axis.The complex number a + b i a+bi a + b i is graphed on this plane just as the ordered pair (a, b) (a,b) (a, b) would be graphed on the Cartesian coordinate plane. 1 Complex Numbers in Quantum Mechanics Complex numbers and variables can be useful in classical physics. They're a generalization of complex numbers that isn't too natural from a physics viewpoint. Chapter Contents. in the presence of gravity or high speeds.Second, the examples I wrote were also linked to space - and they were arguably linked to space much more tightly than your Clifford algebra example. Let's take an example, √-5 is an imaginary number and its square is -5. In fact i think many of the posters have been trying to say (poorly) the following:i can be definitely defined algebraically as a c-numberORcan be wrote in the representation of a conmutative subalgebra of SO(2) defined by the isomorphism:a + ib <=> ( ( a , b) , ( -b , a) )(sorry, i had to write a matrix as a list of rows, i hope its clear), Dear seňor karra,of course, I realize this isomorphism with the matrices. This function is perfectly well behaved, having no singularities of any order in the real number. And indeed, complex numbers themselves are commutative, not non-commutative. would be satisfied even if we add a factor of (where is an . . Magic e. When it comes to complex numbers, lets you do complex operations with relative ease, and leads to the most amazing formula in all of maths. They're many orders of magnitude less important than complex numbers.There may exist mathematical fundamentalists and masturbators who would *like* if physics were all about Clifford algebras but the fact still is that physics is not about them. We may want or expect the quantities we measure to expressible in purely real numbers; but the universe may have other ideas. Complex numbers are broadly used in physics, normally as a calculation tool that makes things easier due to Euler's formula. . Lubos's post lists many of the reasons that suggestion has been amply justified over the years. . . direction of any function can be calculated, but the result in general It's at most "a" generalization in some particular direction - one that isn't extremely important. This comment has been removed by the author. On the In the reformulation of quantum mechanics with geometric algebra (describes geometry of the three dimensions of physical space), the unit imaginary from the standard treatment is identified with several different quantities in the algebra. . Exponential Form of complex numbers . Every formula in this chapter holds for all complex numbers, unless explicitly . \newcommand{\d}{\mathrm{d}} The derivatives for all possible angles lie on a Analytic functions thus do not depend on Superposition of Oscillation While the closure property of the complex numbers is dear to the hearts of mathematicians, the main use of complex numbers in science is to … But the amazing thing is that “pure” theory of complex numbers, complex functions and complex analysis has applications almost everywhere you look, and not just within mathematics. That has, among other tings, emphasized the similarities and differences between the theories of physics in a totally new way. . Graphical Representation of complex numbers.. 4. We consider the choice of the number field in a quantum theory based on a finite field. Luboš Motl However, they are not essential. fourier transforms; curl part 2; complex numbers and number 1; black body radiation; quantum physics; unit circle; why maths seems dry? Moreover, in your newest comment, you directly contradicted your previous comment when you claimed that it was me, and not you, who claimed that there was a mystery with higher-dimensional matrices.There are about 5 completely fundamental gaps in your logic. . So why the fuck are you now reverting your statement? In classical physics, complex numbers would be used as bookkeeping devices to remember the two coordinates of a two-dimensional vector; the complex numbers also knew something about the length of two-dimensional vectors. All of the functions you have ever heard of make sense for complex numbers as well as for real numbers. Complex numbers have broad applications in physics and higher math. . . For example, it's the coefficient in the exponent of oscillating functions - that are eigenvectors under differentiation. . The simple fact is that Professor Hawking should return to the black hole that god made for him since he advances no argument beyond those offered many years ago by the fakers Laplace and Lagrange. Created using, # Generate 3 circles in complex plane, with diameters 0.5, 1 and 2. other hand, if the derivative does not depend on , i.e. It seems that both Senate seats will go to the Democrats, the worthless young empty suit and the problematic reverend. In particular, space of Newtonian physics is simply incorrect for physics when looked at with some precision - e.g. Geometric algebra is not on a collision course with complex numbers. append (2.0 * circle [n]) # Add some random points: for n in range (30): values. . That's what makes it's interpretation "i" and this does not depend on basis choice. @Lumo:Clifford algebra is the generalization of complex numbers and quaternions to arbitrary dimensions. This, together with other results of the reformulation suggests that spin is an intrinsic part of every aspect of quantum mechanics, and that spin may be the only cause of quantum effects. algebra manipulation, all the “messy” features are hidden in the definition and I have irrevocably shown you that it's not.Third, it's just one problem with your statements that the Clifford algebra is not "the most essential thing" for space. It is puzzling that all you managed to extract from my comment was that I should have written "a" in stead of "the". Clearly, x= rcos˚and y= rsin˚ leading to a description in terms of the \complex plane." For more general operators, the eigenvalues are typically computed from a characteristic equation that will contain (x^2+r^2) factors, producing ir and -ir as eigenvalues. . My comment was about the role of Clifford algebra in physics. But other than that, his work explains some of the justification. Then we define exponential, logarithm, power and so on using simple natural . Ed Markey wants an icy concentration camp for 4 bi... 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