0 votes 0 votes Let $A$ be a set. Show that $ \phi \times A = A \times \phi = \phi$ Set Theory & Algebra kenneth-rosen discrete-mathematics set-theory&algebra + – Pooja Khatri asked Apr 5, 2019 Pooja Khatri 119 views answer comment Share Follow See all 0 reply Please log in or register to add a comment.