π ≈ 3.14159
Pi

e ≈ 2.71828
Euler's Number
Nombro de Euler

φ = (1 + √5) / 2 ≈ 1.61803
Golden Ratio
Ora Proporcio

i = √(-1)
Imaginary Unit
Imagina Unuo

∞
Infinity
Senfineco

√2 ≈ 1.41421
Square Root of 2
Kvadrata Radiko de 2

√3 ≈ 1.73205
Square Root of 3 (√3)
Kvadrata Radiko de 3 (√3)

γ ≈ 0.57721
Euler-Mascheroni Constant
Konstanto de Euler-Mascheroni (γ)

α ≈ 2.50290, δ ≈ 4.66920
Feigenbaum Constants
Konstantoj de Feigenbaum

h ≈ 6.62607015 × 10^-34 J·s
Planck's Constant
Konstanto de Planck

c ≈ 299,792,458 m/s
Speed of Light
Lumrapido

G ≈ 6.67430 × 10^-11 N·m²/kg²
Gravitational Constant
Gravita Konstanto

N_A ≈ 6.02214076 × 10²³ mol^-1
Avogadro's Number
Nombro de Avogadro

k ≈ 1.380649 × 10^-23 J/K
Boltzmann Constant
Konstanto de Boltzmann

e ≈ 1.602176634 × 10^-19 C
Elementary Charge
Elementa Ŝargo (e)