plural of logarithmic trigonometric function

plural of programmed function key

plural of loop transfer function

plural of Turing computable function

plural of single-valued function

plural of mathematical function program

plural of forward transfer function

plural of electron wave function

(mathematics, mathematical analysis) The alternating sum of the Dirichlet series expansion of the Riemann zeta function: 𝜂(s)=∑ₙ₌₁ ᪲(-1)ⁿ⁻¹/nˢ=1/(1ˢ)-1/(2ˢ)+1/(3ˢ)-1/(4ˢ)+⋯.

(psychiatry) A term applied to people with autism who are deemed to be cognitively "higher functioning" (with an IQ of 70 or greater) than other people with autism.