feynlag.verify.checks.check_dimension¶
- feynlag.verify.checks.check_dimension(expr, symbol_dims, target_dim)[source]¶
Symbolic dimensional analysis in powers of mass.
- Parameters:
expr – SymPy expression.
symbol_dims – dict
{symbol: mass_dimension}, e.g.{m: 1, Y: 0}.target_dim – expected mass dimension of
expr.
- Returns:
(ok: bool, found_dim).