Liquid crystal aligning agent, liquid crystal alignment film, liquid crystal display element, manufacturing method for liquid crystal display element, and polymerisable compound

A polymerisable compound having a terminal having an α-methylene-γ-butyrolactone group and a terminal having a photopolymer or a photocrosslinking group; a polymer for forming a liquid crystal aligning agent capable of aligning liquid crystals; and a liquid crystal aligning agent containing a solvent.