Source: wikibot/ludvig-faddeev
= Ludvig Faddeev
{wiki=Ludvig_Faddeev}
Ludvig Faddeev is a prominent Russian mathematician and theoretical physicist, known for his contributions to mathematical physics and quantum field theory. Born on March 23, 1934, he has made significant advancements in various areas, including the Faddeev-Popov procedure in quantum field theory, which addresses the issue of gauge invariance in particle physics, and the development of the Faddeev equations in quantum mechanics.