What makes a set well defined

Download Now Download Download to read offline. Well-defined sets Download Now Download Download to read offline. What to Upload to SlideShare. A few thoughts on work life-balance. Is vc still a thing final. The GaryVee Content Model. Mammalian Brain Chemistry Explains Everything. Related Books Free with a 30 day trial from Scribd. Related Audiobooks Free with a 30 day trial from Scribd.

Dynnel Adleurf. Anne Ortiz. Yeasa Dequina, Ph. Ehy Von Roble. Ella Salvador. Cristina Getigan. Show More. Views Total views. Actions Shares. No notes for slide. Well-defined sets 1. Math 7 2. Write your control number 4. Write your grade and section 7 — St. John Bosco 6. Write the date: June 20, Monday 7. Activity sheet : 2 8. Check the subject: Mathematics 9. Create a free Team What is Teams? Learn more. Which set is considered to be well defined in set theory?

Ask Question. Asked 4 years, 3 months ago. Active 4 years, 3 months ago. Viewed 1k times. So, my questions has two parts: How to generally determine if a statement is well-defining a set? Does the second example well-define it? Thank you in advance. Caicedo But according to Zermelo—Fraenkel set of axioms, there is no set which contains itself. I was think your textbook might start from introducing the naive definition first, and in that case it's not really contradictory, then go to ZFC to correct it.

Show 2 more comments. Active Oldest Votes. I think the closest one can come to pinpointing what we accept as a "definition" is to say something like: A definition is a particular kind of description. Community Bot 1. What you've said seems more lika a comment, not like an asnwer which should be accepted. I really struggle to see where did you explain a specific rules or advices I can use to determine is a set is well defined. You just described why do you think author is saying "defined" instead of "described", but that was not my question.

Also, your explanations about two examples confuses me. First example: you just said it is hard to prove. How it can be helpful? This is not something I didn't know before. For example, a set that is identified as "the set of even whole numbers between 1 and 11" is a well-defined set because it is possible to identify the exact members of the set: 2, 4, 6, 8 and There is only one possible solution set that fits this description.

Another example of a well-defined set is "the set of integers from -3 to 3, inclusive. On the other hand, "the set of lucky numbers" is not well-defined because it is open to interpretation.