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Janson A.J's user avatar
Janson A.J's user avatar
Janson A.J's user avatar
Janson A.J
  • Member for 11 years, 9 months
  • Last seen more than 4 years ago
  • Hyderabad/Cochin
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awarded
 Autobiographer
comment
Can we generalize the result of Urysohn's lemma to countable collection of pairwise disjoint closed subsets of a normal space..?
Right. Taking singletons of rationals is the best counterexample. Thanks..
awarded
 Scholar
accepted
Can we generalize the result of Urysohn's lemma to countable collection of pairwise disjoint closed subsets of a normal space..?
comment
Can we generalize the result of Urysohn's lemma to countable collection of pairwise disjoint closed subsets of a normal space..?
Actually that was a mistake that I said it takes constant value n on the nth set. Let's choose some bounded values, like 1/n..
asked
Can we generalize the result of Urysohn's lemma to countable collection of pairwise disjoint closed subsets of a normal space..?