Similar to ウラムの螺旋

Kneser's theorem (combinatorics)

Kronecker limit formula

Copeland–Erdős constant

Sylvester's sequence

Skewes's number

Selmer group

Chebyshev function

Diophantine approximation

Birch and Swinnerton-Dyer conjecture

Fermat–Catalan conjecture

Montgomery's pair correlation conjecture

Riemann hypothesis

Lehmer's conjecture

Annales de Gergonne

RSA (cryptosystem)

Witch of Agnesi

Abelian group

Category of abelian groups

Abelian category

Abelian variety

Abel's theorem

Abel equation

Abel–Jacobi map

Abel–Ruffini theorem

Eisenstein series

Iverson bracket

Einstein tensor