(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

Let their be a set A, and let B be the set: {A, {A}} (the set containing the elements A and the

set that contains element A)

As you know, A is an element of B and {A} is also an element of B.

Also, {A} is a subset of B and {{A}} is also a subset of B.

However, A is not a subset of B

2. Relevant equations

[URL]http://65.98.41.146/~carlodm/phys/123.png[/URL]

3. The attempt at a solution

See my drawing above. I created a Venn Diagram to deduce the logic with no clear results. In the first diagram to the left, I can clearly see that the element A is a subset of B ... yet.. it is not? Can someone explain?

**Physics Forums | Science Articles, Homework Help, Discussion**

Dismiss Notice

Join Physics Forums Today!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

# Homework Help: Discrete Math; Subsets

**Physics Forums | Science Articles, Homework Help, Discussion**