Singmaster's conjecture
Hausdorff gap
lemniscate
bigeminal
cos
nondiscrete
cosine
rational
Fibonacci number
multicomplex
Pythagorean triangle
hyperreal
hemiheterocercal
geminous
denumerization
repeating decimal
diisoquinoline
nontrigonometric
field
heteroradical
hyponormal
numeric complement
tetrahedrally
Narayana number
prime reciprocal magic square
Lindemann-Weierstrass theorem
quarterly
modulus
heterochronously
twofold
sine ratio
trigonic
pronic
harmonic series
amphithallic
heterogonously
heteroduplexed
tetrahedral number
polysymmetric
trinominal
double
trapezium
subsymmetrical
triangularly
floating point
binary numeral system