Multiplication of two one-site operators acting on the same site, giving a new one-site operator.
The one-site operator a
is applied first.
References syten::IPEPSv2::AOneOp::aux, syten::IPEPSv2::AOneOp::loc, syten::IdentityDenseTensorImpl::merge(), syten::IPEPSv2::AOneOp::op, syten::IPEPSv2::AOneOp::phys_inp, syten::IPEPSv2::AOneOp::phys_out, syten::STensorImpl::STensorProxy::prime_all(), syten::STensorImpl::proxy(), SYTEN_ASSERT, and syten::STensorImpl::STensorProxy::unprime().
Referenced by syten::IPEPSv2::ProdOp::combine_neighbours().