Lie product formula (source code)

= Lie product formula
{wiki=Lie_product_formula}

The Lie product formula, also known as the Baker-Campbell-Hausdorff formula (BCH formula), describes the relationship between the exponential of Lie algebras and the products of elements in the algebra. It provides a way to express the product of two exponentials of elements from a Lie algebra in terms of their commutators.