action in Japanese

Demanding or signifying the start of something, usually a performance.

Demanding or signifying the start of something, usually a performance.

Something done, often so as to accomplish a purpose.

Something done, often so as to accomplish a purpose.

A way of motion or functioning.

A way of motion or functioning.

Fast-paced activity.

(military) Combat.

(military) Combat.

(legal) A charge or other process in a law court (also called lawsuit and actio).

(legal) A charge or other process in a law court (also called lawsuit and actio).

(mathematics) A way in which each element of some algebraic structure transforms some other structure or set, in a way which respects the structure of the first. Formally, this may be seen as a morphism from the first structure into some structure of endomorphisms of the second; for example, a group action of a group G on a set S can be seen as a group homomorphism from G into the set of bijections on S (which form a group under function composition), while a module M over a ring R can be defined as an abelian group together with a ring homomorphism from R into the ring of group endomorphisms of M (which is also called the action of R on M).

(mathematics) A way in which each element of some algebraic structure transforms some other structure or set, in a way which respects the structure of the first. Formally, this may be seen as a morphism from the first structure into some structure of endomorphisms of the second; for example, a group action of a group G on a set S can be seen as a group homomorphism from G into the set of bijections on S (which form a group under function composition), while a module M over a ring R can be defined as an abelian group together with a ring homomorphism from R into the ring of group endomorphisms of M (which is also called the action of R on M).