Hi:

Let A be a set. Is A the union of all its finite subsets? By the way: how can I write a capital cursive in Latex? Regards and thanks for reading.

Enrique.

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- October 13th 2009, 11:57 AMENRIQUESTEFANINIIs a set the union of its finite subsets?
Hi:

Let A be a set. Is A the union of all its finite subsets? By the way: how can I write a capital cursive in Latex? Regards and thanks for reading.

Enrique. - October 13th 2009, 12:21 PMminkyboodle
I would say yes it is. A union is everything included in the selected sets. Here, there is only one set, and we are not excluding any part of it, so it is in Union of itself. I am no expert., just trying to help.

- October 13th 2009, 12:26 PMPlato
- October 13th 2009, 02:09 PMENRIQUESTEFANINI
It was very kind of you. A short time after writing I saw the key was considering the singletons. Best regards,

Enrique.