mathlib

2a155208 - chore(data/polynomial): generalize `aeval_eq_sum_range` to `comm_semiring` (#8037)

chore(data/polynomial): generalize `aeval_eq_sum_range` to `comm_semiring` (#8037) This pair of lemmas did not need any `comm_ring` assumptions, so I put them in a new section with weaker typeclass assumptions.