Inv

inv is an abbreviation that appears in several different fields, and its meaning depends on the context. In mathematics and related disciplines, inv commonly denotes an inverse. This includes the inverse function f^-1 of a function f, the inverse matrix A^-1 of an invertible matrix A, and the multiplicative inverse x^-1 of a number x, which satisfies x·x^-1 = 1. In modular arithmetic, the modular inverse of a number a modulo m is an integer b such that a·b ≡ 1 (mod m).

In computing and cryptography, inv is used as shorthand for inverse in code and algorithms. The modular inverse is especially important in public-key cryptography and digital signatures, where it enables certain key-generation and decryption operations. Programmers may also use inv as a variable name or function identifier to indicate an inversion or toggle operation, depending on the program’s design.

In gaming and digital media, inv most often stands for inventory. The term refers to the collection of items a player carries, as well as the inventory screen or menu used to view and manage those items. This usage is prevalent across role-playing games, adventure games, and many online titles, where players frequently type or display an “inv” label for quick access to items.

In linguistics, inv is used to denote inverse voice, a grammatical construction found in some languages where the typical subject–object alignment is inverted for certain evidential, topical, or discourse-related reasons.

Other, less formal uses include shorthand in business writing for inventory or stock-related notes, though formal documentation tends to spell out the full term.

See also: inverse, inventory.