Similar to Ryll-Nardzewskiの不動点定理

Artin reciprocity

Artin–Rees lemma

Albanese variety

Alpha shape

Alpha–beta pruning

Alphabet (formal languages)

Roger C. Alperin

Leon Battista Alberti

Almagest

Stephanie B. Alexander

Alexander polynomial

Fixed-point theorem

Kakutani fixed-point theorem

Caristi fixed-point theorem

Kleene fixed-point theorem

Nielsen theory

Banach fixed-point theorem

Brouwer fixed-point theorem

Poincaré–Birkhoff theorem

Borel fixed-point theorem

Markov–Kakutani fixed-point theorem

Fixed-point theorems in infinite-dimensional spaces

Lefschetz fixed-point theorem