# A scalar multiple of a linear transformation is a linear transformation

Put content here**Theorem:** If \(T: V 	o W\) is a linear transformation and \(c\) is a scalar, then \(cT\) is also a linear transformation.
⏎
**Proof:**
1. *Additivity:* \((cT)(\mathbf{u} + \mathbf{v}) = c \cdot T(\mathbf{u} + \mathbf{v}) = c(T(\mathbf{u}) + T(\mathbf{v})) = cT(\mathbf{u}) + cT(\mathbf{v}) = (cT)(\mathbf{u}) + (cT)(\mathbf{v})\)
⏎
2. *Homogeneity:* \((cT)(a\mathbf{v}) = c \cdot T(a\mathbf{v}) = c(aT(\mathbf{v})) = (ca)T(\mathbf{v}) = a(cT(\mathbf{v})) = a(cT)(\mathbf{v})\)
⏎
Both linearity conditions are satisfied.
⏎
**Consequence:** The set of all linear transformations from \(V\) to \(W\), denoted \(\mathcal{L}(V, W)\), is itself a vector space under pointwise addition and scalar multiplication.

# Parents

* Terminology