Is the Intersection of Subspaces a Subspace in a Vector Space?

zhenghao1
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Hi to all,

I really need help fast.

How do I solve this question? A solution would be much appreciated. THANKS A MILLION!

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Let S1 and S2 be the two subspaces in a vector space V. Show that the intersection of S1 and S2 is also a subspace in V.
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You need to show some work. What is the definition of a subspace?
 
Question

Ok sorry, there was one piece of information that I left out.

The question is:

Let S1 and S2 be the two subspaces in a vector space V. Show that the intersection of S1 and S2 is also a subspace in V.

Assume vector space over GF(2).

Can someone please help me? Thanks!
 
That doesn't change anything. You need to show us what you have attempted already? What is the definition of a subspace?
 
Let a, b any two elements in the intersection and show that they satisfy the 3 rules of subspace. Any textbook should also have the proof already because this is a common theorem.
 
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