let V be non empty RLSStruct ; :: thesis: for V1 being non empty add-closed multi-closed Subset of
for a being Real
for v being VECTOR of
for w being VECTOR of st w = v holds
a * w = a * v
let V1 be non empty add-closed multi-closed Subset of ; :: thesis: for a being Real
for v being VECTOR of
for w being VECTOR of st w = v holds
a * w = a * v
let a be Real; :: thesis: for v being VECTOR of
for w being VECTOR of st w = v holds
a * w = a * v
let v be VECTOR of ; :: thesis: for w being VECTOR of st w = v holds
a * w = a * v
let w be VECTOR of ; :: thesis: ( w = v implies a * w = a * v )
assume A1: w = v ; :: thesis: a * w = a * v
then [a,v] in [:REAL ,V1:] by ZFMISC_1:106;
hence a * w = a * v by A1, FUNCT_1:72; :: thesis: verum