Index of Definitions

| Definition | Location |

Foundations

Definition Location
Natural Number 1.1
Integer 1.2
Absolute Value 1.5
Mathematical Induction 1.6
Strong Induction 1.7
Recursive Definition 1.8

Divisibility

Definition Location
Divisibility 2.1
Prime Number 2.2
Composite Number 2.3
Greatest Common Divisor 2.5
Least Common Multiple 2.6
Coprime Integers 2.10

Prime Factorization

Definition Location
Prime Factorization 3.1
Canonical Prime Decomposition 3.2
Prime Counting Function 12.1
Prime Gap 12.7

Congruences

Definition Location
Congruence Modulo $n$ 4.1
Residue Class 4.2
Modular Inverse 4.5
System of Congruences 4.6

Arithmetic Functions

Definition Location
Arithmetic Function 5.1
Divisor Function 5.1
Möbius Function 5.2
Euler Totient Function 5.3
Liouville Function 5.4
Multiplicative Function 5.5
Dirichlet Convolution 5.6

Diophantine Equations

Definition Location
Diophantine Equation 6.1
Pythagorean Triple 6.2
Pell Equation 6.3
Rational Point 6.7
Integral Point 6.7

Quadratic Residues

Definition Location
Quadratic Residue 7.1
Quadratic Nonresidue 7.1
Legendre Symbol 7.2
Jacobi Symbol 7.3
Gauss Sum 7.6

Continued Fractions

Definition Location
Continued Fraction 8.1
Convergent 8.5
Quadratic Irrational 8.6
Diophantine Approximation 8.7

Algebraic Number Theory

Definition Location
Algebraic Integer 9.1
Minimal Polynomial 9.2
Number Field 9.3
Ring of Integers 9.4
Norm 9.5
Trace 9.5
Unit 9.6
Ideal 9.8
Principal Ideal 10.1
Prime Ideal 10.2
Maximal Ideal 10.2
Fractional Ideal 10.3
Dedekind Domain 10.5
Class Group 10.6
Class Number 10.7

Analytic Number Theory

Definition Location
Infinite Series 11.1
Infinite Product 11.2
Euler Product 11.3
Abel Summation 11.5
Chebyshev Functions 12.2
Error Term 12.5
Short Interval 12.6

Zeta and $L$-Functions

Definition Location
Riemann Zeta Function 13.1
Nontrivial Zero 13.5
Critical Strip 13.5
Critical Line 13.6
Dirichlet Character 14.1
Orthogonality Relation 14.2
Dirichlet $L$-Function 14.3

Additive and Sieve Methods

Definition Location
Sumset 15.1
Goldbach Problem 15.2
Waring Problem 15.3
Circle Method 15.4
Brun Sieve 16.1
Selberg Sieve 16.2
Large Sieve 16.3

Algebraic Extensions and Local Fields

Definition Location
Field Extension 17.1
Splitting Field 17.2
Galois Group 17.3
Finite Field 17.4
Cyclotomic Field 17.5
Ramification 17.6
Absolute Value 18.1
$p$-Adic Number 18.2
Completion 18.3
Local Field 18.5
Adele 18.6
Idele 18.6

Class Field Theory

Definition Location
Abelian Extension 19.1
Reciprocity Map 19.2
Hilbert Class Field 19.3
Local Class Field Theory 19.4
Global Class Field Theory 19.5

Modular Forms

Definition Location
Modular Group 20.1
Modular Function 20.2
Modular Form 20.3
Eisenstein Series 20.4
Cusp Form 20.5
Hecke Operator 20.6
Modular Curve 20.7

Elliptic Curves

Definition Location
Plane Cubic Curve 21.1
Elliptic Curve 21.1
Point at Infinity 21.2
Group Law 21.2
Rational Point 21.3
Mordell-Weil Group 21.5

Arithmetic Geometry

Definition Location
Affine Variety 22.1
Projective Variety 22.1
Scheme 22.2
Morphism 22.3
Fiber 22.3
Arithmetic Surface 22.5
Étale Cohomology 22.6

Automorphic Forms and Representations

Definition Location
Representation 23.1
Automorphic Representation 23.2
Adelic Method 23.3
Langlands Program 23.4
Functoriality 23.5
Trace Formula 23.6

Computational and Cryptographic Number Theory

Definition Location
Primality Test 24.2
Integer Factorization Algorithm 24.3
Lattice Reduction 24.4
RSA Cryptosystem 25.1
Diffie-Hellman Key Exchange 25.2
Elliptic Curve Cryptography 25.3
Pairing-Based Cryptography 25.4
Lattice Cryptography 25.5
Post-Quantum Cryptography 25.6
Zero-Knowledge Proof 25.7