the sets and logic by Alessandra Mancuso https://padlet.com/alessandramancuso/7hwuflk549o9 en-us 2017-11-13 20:36:21 UTC 2019-02-03 17:36:24 UTC hello@padlet.com https://padlet-assets.s3.amazonaws.com/icons/Playcontrol.png subset alessandramancuso https://padlet.com/alessandramancuso/7hwuflk549o9/wish/309875011 if all the elements of a set B also belong  the set A,B is a subset of A.
if A is a subset of B and B is a subset of A,A and B are equal sets

]]> 2018-11-30 17:11:05 UTC https://padlet.com/alessandramancuso/7hwuflk549o9/wish/309875011 operations with sets alessandramancuso https://padlet.com/alessandramancuso/7hwuflk549o9/wish/309902209 The intersection of A and B is the set of the elements which belong to both A and B.
The  A and B union is the set of the element which belong to either A or B or both.
two sets are disjoint if they haven't got common elements. 
The difference between A and B is the set formed by elements A that are not elements of B.

]]> 2018-11-30 18:04:09 UTC https://padlet.com/alessandramancuso/7hwuflk549o9/wish/309902209 what's a set alessandramancuso https://padlet.com/alessandramancuso/7hwuflk549o9/wish/326873025 a grouping of object is a mathematical set if there's an objective criterion to establish univocally whether an object is part of grouping or not.
if an object a is part of a set A, it's said that it's an element that belongs to the set]]> 2019-02-01 20:35:49 UTC https://padlet.com/alessandramancuso/7hwuflk549o9/wish/326873025 the representation of a set alessandramancuso https://padlet.com/alessandramancuso/7hwuflk549o9/wish/326876896 there're three types of set:
graphic
for listing
by characteristic features]]> 2019-02-01 20:49:53 UTC https://padlet.com/alessandramancuso/7hwuflk549o9/wish/326876896 the sets of parts and the partition of a set alessandramancuso https://padlet.com/alessandramancuso/7hwuflk549o9/wish/326887897 the sets of the parts of A, is the set which has as elements all subsets of A.
a partition of A is a set of subsets of A such that:
every subset isn't empty
all subset are disjointed between them
the union of all subsets is A

]]> 2019-02-01 21:35:58 UTC https://padlet.com/alessandramancuso/7hwuflk549o9/wish/326887897 the logical propositions alessandramancuso https://padlet.com/alessandramancuso/7hwuflk549o9/wish/326890710 the logical propositions are statements such that it's possible to establish whether they are true or false, giving them a value of truth]]> 2019-02-01 21:49:49 UTC https://padlet.com/alessandramancuso/7hwuflk549o9/wish/326890710 logical connectives and expressions alessandramancuso https://padlet.com/alessandramancuso/7hwuflk549o9/wish/326891979 the logical connectives e, o, not, o...they tie two or more propositions together, they form the composite propositions.
the negation the conjunction is the disjuction of two propositions A and B are defined in the follonwing table]]> 2019-02-01 21:56:57 UTC https://padlet.com/alessandramancuso/7hwuflk549o9/wish/326891979 the logic and the sets alessandramancuso https://padlet.com/alessandramancuso/7hwuflk549o9/wish/326894787 an open statement is a statement that contains at least one variable.
if to the variable we replace an elent of the universe set, the open statement becomes proposition

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