olemus
võrrand, mis väljendab lokaalset seost
jada a₀, a₁, a₂, ... elementide vahel

Encyclopedia Britannica:
mathematical equality involving the differences between successive values of a function of a discrete variable

näide
a_n+1 = a_n + a_n-1

ülevaateid
https://en.wikipedia.org/wiki/Recurrence_relation#difference_equation

https://slideplayer.com/slide/4926272/

https://math.libretexts.org/Bookshelves/Analysis/Supplemental_Modules_(Analysis)/Ordinary_Differential_Equations/2%3A_First_Order_Differential_Equations/2.1%3A_Difference_Equations

https://encyclopediaofmath.org/wiki/Difference_equation

https://www.cl.cam.ac.uk/teaching/2003/Probability/prob07.pdf

https://people.math.aau.dk/~cornean/IMM_E12/notes2011a.pdf

vt ka
- diferents
- diferentsiaalvõrrand