nollavektori
Nollavektori, or the zero vector, is the additive identity in a vector space. In a vector space V over a field F, the zero vector is denoted 0_V (often simply 0) and satisfies v + 0_V = v for every vector v in V.
The zero vector is unique: there is exactly one element of V that acts as the additive
Examples include the zero vector in R^n, which is (0, 0, ..., 0); the zero polynomial in a
The zero vector is foundational in linear algebra. It must lie in every subspace, and it is