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Mathematical Physics Topics and Formulae Reference

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Covers formulae and brief descriptions of several topics in mathematical physics at the undergraduate level such as: integral and differential calculus, vector calculus, fourier analysis, complex analysis, statistics and probability, linear algebra etc.

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Reference Text for Mathematical Physics

Deepanshu Bisht

,Contents

1 Some Common Standard Math Formulas 1
1.1 Trigonometry . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
1.2 Derivatives . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
1.3 Integrals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

2 Some less used formulae 5
2.1 Inverse trig, hyperbolic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
2.2 Polynomial Equation solving . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

3 Partial Derivatives 6
3.1 Basics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
3.2 Useful theorems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

4 Differential Equations 7
4.1 Ordinary Differential Equations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
4.2 Linear Systems of ODEs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
4.3 Partial Differential Equations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

5 Complex Analysis 11
5.1 Basics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
5.2 Complex Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
5.3 Complex integrals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

6 Vector Calculus 16
6.1 Differentiation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
6.2 Grad, Div, Curl . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

7 Coordinate Systems 19
7.1 Cartesian coordinates . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
7.2 Polar, Spherical coordinates . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
7.3 Line, surface and volume elements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
7.4 Coordinate transformations and unit vectors . . . . . . . . . . . . . . . . . . . . . . . . . . 21

8 Binomial theorem, Permutation and Combinations 22

9 Matrices and Determinants 23
9.1 Properties of Determinants . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
9.2 Eigenvalues and eigenvectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

10 Limits and Series 25
10.1 Infinite series . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
10.2 Complex series . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

11 Standard Functions 28
11.1 Gamma and Beta Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
11.2 Special Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
11.3 Delta function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32



1

,12 Everything Fourier 33
12.1 Fourier Series . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
12.2 Fourier integral and transforms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34

13 Stats and Probability 35
13.1 Popular discrete and continous distributions . . . . . . . . . . . . . . . . . . . . . . . . . . 37
13.2 Random walk . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38




2

, About the document

This document is a go-to reference in need of mathematical formulae/equations and associated notes
which are directly or indirectly useful in doing physics. But it will not contain expressions for laws of
physics and equations relating physical quantities as such.

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Number of pages
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