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Part 2 §6: Elementary Geometry

Elementary and miscellaneous geometry

18 entries· Edition 2019FR→ About Part 2
2-6belongs to set
18
2-6.1
belongs to set x ∈ A
belongs to , + is an element of the set
2-6.2
not belong to y ∉ A
does not belong to , + is not an element of the set
2-6.3
set with elements { x 1 , x 2 , … , x n }
set with elements
2-6.4
set of elements { x ∈ A ∣ p ( x ) }
set of those elements of for which the proposition is true
2-6.5
number of elements card A , | A |
number of elements in , + cardinality of
2-6.6
empty set ∅ , { }
the empty set
2-6.7
included in B ⊆ A
is included in , + is a subset of
2-6.8
proper subset B ⊂ A
is properly included in , + is a proper subset of
2-6.9
union A ∪ B
union of and
2-6.10
intersection A ∩ B
intersection of and
2-6.11
union of sets ⋃ i = 1 n A i
union of the sets +
2-6.12
intersection of sets ⋂ i = 1 n A i
intersection of the sets + +
2-6.13
difference of sets A \   B
difference of and , + minus
2-6.14
ordered pair ( a , b )
ordered pair , + couple
2-6.15
ordered n-tuple ( a 1 , a 2 , … , a n )
ordered -tuple
2-6.16
Cartesian product of two sets A × B
Cartesian product of the sets and
2-6.17
Cartesian product of several sets ∏ i = 1 n A i
Cartesian product of the sets + +
2-6.18
identity relation id A
identity relation on set , + diagonal of
18 of 18 entries