🇬🇧 en bg 🇧🇬

formal power series noun

  • (mathematics, algebra) Any finite or infinite series of the form \textstyle a_0 + a_1 x + a_2 x^2 \dots = \sum_i{a_i x^i}, where the ai are numbers, but it is understood that no value is assigned to x.
 формален степенен ред
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