Complex sentence: Path integral representations of evolution operators have intrinsic ambiguity the originates from non-commutativity of momenta and position operators,\\ hat B\\ hat x\\ ne\\ hat x\\ hat B.
Split into simpler sentences: Path integral representations of evolution operators have intrinsic ambiguity. It the originates from non-commutativity of momenta and position operators,\\ hat B\\ hat x\\ ne\\ hat x\\ hat B.