[Leejohnston]

Algebra & Number Theory — Patterns, Structure, and the Nature of Numbers

Algebra deals with symbols, equations, and the structure beneath mathematical expressions. 
Number theory explores the fundamental properties of numbers themselves — primes, divisibility, modular systems, and hidden patterns.

Post here about:
• Equations & expressions 
• Prime numbers 
• Modular arithmetic 
• Sequences & series 
• Factorisation 
• Divisibility rules 
• Symmetry & algebraic structure 
• Curious or deep number patterns 

If you enjoy patterns, puzzles, or structural beauty — this subforum is home.