Subverted Warhol and the world's largest painting – the week in art

Art Basel explores samplings of influential contemporary artists, Tate Liverpool’s democracy show provokes, and it’s your last chance to catch Titian – all in your weekly dispatchPioneers
Leading commercial galleries offer their samplings of influential contemporary artists from Victoria Miro’s delve into the work of British conceptualist Stephen Willats to Helly Nahmad’s presentation of Antoni Tapies. All the fun of the fair without leaving home.
• Art Basel o