Shall We Call It δ?
Two mathematicians name their baby like a variable: δ? ε? We already have an ε… ε₂, then.
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Cartoon by Ben Orlin, Math with Bad Drawings. https://cartoons.mathwithbaddrawings.com/2017-03-01-shall-we-call-it-delta/ (CC BY-NC 4.0)Transcript
A: "Shall we call it δ?" B: "What about ε?" A: "We already have an ε." B: "ε₂, then." [B cradles a small, pudgy green ε-shaped baby]