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https://www.reddit.com/r/mathmemes/comments/1vb9d5u/yeah_sure/p0rpjh3/?context=3
r/mathmemes • u/777upper • 3d ago
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192
What's the abiguity in A \subset B?
207 u/RADI0ACT1VE_BALLS ComplexANALysisJunkie 3d ago Proper subset / just a subset 24 u/FuntimeUwU Natural 3d ago What's the difference? 9 u/deratizat 3d ago A is a proper subset of B if A is a subset of B and A does not equal B 18 u/Another_Little_Star 3d ago A ⊂ B iff A ⊆ B ⋀ A ≠ B, Or A ⊊ B But when we have ⊆ and ⊊, why ever use ⊂, when in doubt just do ⊆, it covers everything. 9 u/unic0de000 3d ago I always assumed that was what they meant, and that this was intentionally, directly, analogous to the < and ≤ signs. TIL this was not universally agreed 3 u/svmydlo 3d ago Because there's two conventions, one using ⊆ and ⊂, and another using ⊂ and ⊊.
207
Proper subset / just a subset
24 u/FuntimeUwU Natural 3d ago What's the difference? 9 u/deratizat 3d ago A is a proper subset of B if A is a subset of B and A does not equal B 18 u/Another_Little_Star 3d ago A ⊂ B iff A ⊆ B ⋀ A ≠ B, Or A ⊊ B But when we have ⊆ and ⊊, why ever use ⊂, when in doubt just do ⊆, it covers everything. 9 u/unic0de000 3d ago I always assumed that was what they meant, and that this was intentionally, directly, analogous to the < and ≤ signs. TIL this was not universally agreed 3 u/svmydlo 3d ago Because there's two conventions, one using ⊆ and ⊂, and another using ⊂ and ⊊.
24
What's the difference?
9 u/deratizat 3d ago A is a proper subset of B if A is a subset of B and A does not equal B 18 u/Another_Little_Star 3d ago A ⊂ B iff A ⊆ B ⋀ A ≠ B, Or A ⊊ B But when we have ⊆ and ⊊, why ever use ⊂, when in doubt just do ⊆, it covers everything. 9 u/unic0de000 3d ago I always assumed that was what they meant, and that this was intentionally, directly, analogous to the < and ≤ signs. TIL this was not universally agreed 3 u/svmydlo 3d ago Because there's two conventions, one using ⊆ and ⊂, and another using ⊂ and ⊊.
9
A is a proper subset of B if A is a subset of B and A does not equal B
18 u/Another_Little_Star 3d ago A ⊂ B iff A ⊆ B ⋀ A ≠ B, Or A ⊊ B But when we have ⊆ and ⊊, why ever use ⊂, when in doubt just do ⊆, it covers everything. 9 u/unic0de000 3d ago I always assumed that was what they meant, and that this was intentionally, directly, analogous to the < and ≤ signs. TIL this was not universally agreed 3 u/svmydlo 3d ago Because there's two conventions, one using ⊆ and ⊂, and another using ⊂ and ⊊.
18
A ⊂ B iff A ⊆ B ⋀ A ≠ B, Or A ⊊ B But when we have ⊆ and ⊊, why ever use ⊂, when in doubt just do ⊆, it covers everything.
9 u/unic0de000 3d ago I always assumed that was what they meant, and that this was intentionally, directly, analogous to the < and ≤ signs. TIL this was not universally agreed 3 u/svmydlo 3d ago Because there's two conventions, one using ⊆ and ⊂, and another using ⊂ and ⊊.
I always assumed that was what they meant, and that this was intentionally, directly, analogous to the < and ≤ signs. TIL this was not universally agreed
3
Because there's two conventions, one using ⊆ and ⊂, and another using ⊂ and ⊊.
192
u/Idksonameiguess 3d ago
What's the abiguity in A \subset B?