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σ (EN)
litero, simbolo

litero “σ”

σ, sigma
  1. la dek-oka litero de la greka alfabeto, minuskla sigma
    In Greek language classes, students learn that σ is the lowercase form of sigma.

simbolo “σ”

σ
  1. (mathematiko) simbolo reprezentanta norman devion en statistiko
    The statistician calculated σ to understand how the data varied from the mean.
  2. (fiziko) simbolo reprezentanta elektran konduktivon
    The electrical conductivity σ increases with temperature in this material.
  3. (fiziko) simbolo reprezentanta transversan areon
    The scattering cross-section σ is crucial in nuclear physics experiments.