# Igäria Mnagarka

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 Jan28 comment What's the successor of $\emptyset$? Do we need to assume that $\emptyset \in \emptyset$ for the successor to exist? @DanChristensen The book has the Peano Axioms, but at this elementary level (in the book), the natural numbers still don't exist. The author is in the process of construction. Jan26 revised Good books on “advanced” probabilities added 84 characters in body Jan26 revised Good books on “advanced” probabilities added 89 characters in body Jan26 revised Good books on “advanced” probabilities added 148 characters in body Jan26 revised Good books on “advanced” probabilities added 5 characters in body Jan26 comment How to Self learn math @ireallydonknow He's probably missing the order in which the subjects must be studied. Jan26 comment How to Self learn math @BharathGRon This site contains a order. Also, look this answer. I'd advise you to start with Lang's Basic Mathematics and Geometry if you're in a really basic level. Good luck. Jan26 accepted What's the right moment to learn Set Theory? Jan26 accepted Is there a proof of the irrationality of $\sqrt{2}$ that involves modular arithmetic? Jan26 accepted Since the conception of Set Theory, was Russell's Set the only problematic set found? Jan26 accepted Misconceptions about Cantor's diagonal argument? Jan26 comment What's the successor of $\emptyset$? Do we need to assume that $\emptyset \in \emptyset$ for the successor to exist? Yes. Sorry, my mind was too burned for me to notice the difference. Jan26 accepted What's the successor of $\emptyset$? Do we need to assume that $\emptyset \in \emptyset$ for the successor to exist? Jan26 comment What's the successor of $\emptyset$? Do we need to assume that $\emptyset \in \emptyset$ for the successor to exist? Thanks. Yes, now I see. I was afraid of doing the operation and having no element to put in there. I thought that the doing the operation and picking $x\in b$ would give me an indefinite expression such as divison by $0$. Jan26 accepted Doubts on the axiom of union? Jan26 asked What's the successor of $\emptyset$? Do we need to assume that $\emptyset \in \emptyset$ for the successor to exist? Jan24 asked Doubts on the axiom of union? Jan24 accepted $(X \supset A)\wedge (X \supset B)|(Y\supset A) \wedge (Y \supset B)\to Y\supset X$|Prove that $X=A \cup B$. Jan22 revised $(X \supset A)\wedge (X \supset B)|(Y\supset A) \wedge (Y \supset B)\to Y\supset X$|Prove that $X=A \cup B$. deleted 1 characters in body Jan22 comment $(X \supset A)\wedge (X \supset B)|(Y\supset A) \wedge (Y \supset B)\to Y\supset X$|Prove that $X=A \cup B$. @user127.0.0.1 That's what I thought. But you wrote in a very compact form. Do you agree?