October

Question 1

Prop: Letφ: R==>S be a homomorphism I= kerφ
then I has to satisfy these 4 conditions

Answer 1

1. 0∈I
2. ∀f,g∈I==>f+g ∈I
3. ∀f∈I==>-f∈I
4. ∀r∈R and ∀f∈I==>r.f ∈I

Question 2

proof #1 oct