Skein theory for the Links-Gould polynomial

Building further on work of Marin and Wagner, we give a braid-type skein theory of the Links-Gould polynomial invariant of oriented links, prove that it can be used to evaluate any oriented link and prove that it is also shared by the $V_1$-polynomial defined by two of the authors, deducing the equality of the two link polynomials. This implies specialization properties of the $V_1$-polynomial to the Alexander polynomial and to the $\mathrm{ADO}_3$-invariant, the fact that it is a Vassiliev power series invariant, as well as a Seifert genus bound for knots.