WordReference Random House Unabridged Dictionary of American English © 2026
cir′cle of conver′gence, 
  1. Mathematicsa circle associated with a given power series such that the series converges for all values of the variable inside the circle and diverges for all values outside it. Cf. interval of convergence.

'circle of convergence' also found in these entries (note: many are not synonyms or translations):
interval of convergence

Forum discussions with the word(s) "circle of convergence" in the title:


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