Steenrod operations and A-module extensions

Robert Bruner, Christian Nassau, Sean Tilson

Explicit extensions representing cocycles $x\in Ex{t}_A^{s,t}(F_2,F_2)$ are useful in calculating Steenrod operations $Sq^i : Ext_{A}^{s,t}(F_2,F_2) \longrightarrow Ext_{A}^{s+i,2…