Sums of two symbols in $K_2(F)/2K_2(F)$ in characteristic two

Demba Barry, Adam Chapman, Ahmed Laghribi

In this paper, study sums $A=\{a,b{\}}_2+\{c,d{\}}_2$ of two symbols in $K_2(F)/2K_2(F)$ when $\mathrm{char}(F)=2$. We first prove a chain lemma that connects $A$ to $B=\{α,β\}…