Product (business), an item that can be offered to a market to satisfy the desire or need of a customer.
Product (project management), a deliverable or set of deliverables that contribute to a business solution
Mathematics
Product (mathematics)
Algebra
Direct product
Set theory
Cartesian product of sets
Group theory
Direct product of groups
Semidirect product
Product of group subsets
Wreath product
Free product
Zappa–Szép product (or knit product), a generalization of the direct and semidirect products
Ring theory
Product of rings
Ideal operations, for product of ideals
Linear algebra
Scalar multiplication
Matrix multiplication
Inner product, on an inner product space
Exterior product or wedge product
Multiplication of vectors:
Dot product
Cross product
Seven-dimensional cross product
Triple product, in vector calculus
Tensor product
Topology
Product topology
Algebraic topology
Cap product
Cup product
Slant product
Homotopy theory
Smash product
Wedge sum (or wedge product)
Category theory
Internal product, in a monoidal category
Product (category theory), a generalization of mathematical products
Fibre product or pullback
Coproduct or pushout
Probability theory
Wick product of random variables
Graph theory
Graph product