Define τ⊂ P(ℝ) as follows:

τ={φ}∪{u⊆ℝ:{-π,π}⊆u} .

prove that τ is a topology on ℝ .

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- May 26th 2010, 12:01 AMblblprove that τ is the topology on ℝ
Define τ⊂ P(ℝ) as follows:

τ={φ}∪{u⊆ℝ:{-π,π}⊆u} .

prove that τ is a topology on ℝ . - May 26th 2010, 12:29 AMDrexel28