Let B be a subset of Y, and let B be sequentially compact. Let D be a closed subset of B. Then D is sequentially compact.
Can anyone help me out and give me a general direction to go with proving this?
Let B be a subset of Y, and let B be sequentially compact. Let D be a closed subset of B. Then D is sequentially compact.
Can anyone help me out and give me a general direction to go with proving this?