Peter's copy of the notion of a subset

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Peter Allen 6 years, 5 months ago

Created this as a copy of the notion of a subset.

Name	Status	Author	Last Modified
the notion of a subset	draft	Bernhard von Stengel	03/10/2022 22:29
Peter's copy of the notion of a subset	draft	Peter Allen	10/10/2018 12:30

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In this question we'll be practicing the notion of a subset.

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First, we recall the definition of a subset. Let $A$ and $B$ be two sets. We say that $A$ is a subset of $B$ and write $A\subseteq B$ if ...
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... for all $x$ we have that $x$ is an element of $A$ and $x$ is an element of $B$ .

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... $\forall x\in A~:~A\subseteq B$ .

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... $\forall x~:~x\in A~\Rightarrow~x\in B$ .

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... $x$ is an element of $B$ whenever $x$ is an element of $A$ .

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... $x\in A~\wedge~x\in B$ .

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This question is used in the following exams:

Week 2 homework by Peter Allen in Peter's workspace.
Multi-question exam for Moodle by Kris Roger in Kris's workspace.

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Taxonomy: mathcentre

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Taxonomy: Context

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Peter Allen 6 years, 5 months ago

Error in variable testing condition

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