Linear maps

Let V and W be two K-vector spaces. A map F : v → W https://s3-euw1-ap-pe-df-pch-content-public-p.s3.eu-west-1.amazonaws.com/9780203748961/aca0116a-0c65-455a-ab7c-0f2ab0e9f704/content/eq681.tif"/>