Coproduct
∐
Type it
| Unicode | U+2210 | |
|---|---|---|
| LaTeX | \coprod | |
| HTML entity | ∐ | |
| Character | ∐ |
Meaning
An upside-down product sign. For sets it means the disjoint union, and in category theory it names the coproduct, which is dual to the product. Compare with Product and Union.
How to read it
∐ᵢ Aᵢ
is read “the coproduct of A i over i”.