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12 July 2025

diffhist Vector space 03:40 +37 Goodphy talk contribs (→Definition and basic properties: Added that a vector space over a field F is also called F-vector space, in the vector space definition section (Definition and basic properties).) Tag: Visual edit
diffhist Vector space 03:37 +301 Goodphy talk contribs (→Linear maps and matrices: Removed the converse of a statement "if two vector spaces are same in dimension, then they are isomorphic" because the proof of the converse seems not existing in this section.) Tag: Visual edit

9 July 2025

diffhist Vector space 06:15 +789 Goodphy talk contribs (→Linear maps and matrices: Added a proof that, if two vector spaces are same in dimension, then they are isomorphic, because of a possible one-to-one correspondence between their bases.) Tag: Visual edit
diffhist m Vector space 03:57 +5 Goodphy talk contribs (→Linear maps and matrices: Slightly improved sentences.) Tag: Visual edit

7 July 2025

diffhist Set (mathematics) 21:00 +3 D.Lazard talk contribs (→Algebra of subsets: "The set" refers to U, not to any subset)
diffhist Set (mathematics) 10:17 +8 Jochen Burghardt talk contribs (Undid revision 1299255997 by D.Lazard (talk): agree with Ifoundamistake75475: A \Delta A = (A \ A) \cup (A \ A) = {} \cup {} = {}, i.e. the additive inverse, while A \Delta A' = (A \ A') \cup (A' \ A) = A \cup A' = U, when A' denotes the absolute complement) Tag: Undo
diffhist Set (mathematics) 09:28 −8 D.Lazard talk contribs (Reverted 1 edit by Ifoundamistake75475 (talk): Was corect) Tags: Twinkle Undo Reverted
diffhist Set (mathematics) 06:39 +8 Ifoundamistake75475 talk contribs (→Algebra of subsets: I believe I found a mistake. In the boolean ring that is the powerset of a given set, when you are using the additive operation (symmetric difference), the additive inverse (a number x such that a+x=0 for all a) is not its complement, as by applying symmetric difference (any elements contained in two sets but not both), you can see that the complement (all elements not a part of A is the complement of A) when added to a set results in simply the union (all elements a p...) Tags: Reverted Mobile edit Mobile web edit
diffhist Vector space 03:57 +58 Goodphy talk contribs (→Linear maps and matrices: Elaborated sentences.) Tag: Visual edit
diffhist Vector space 03:46 +170 Goodphy talk contribs (→Linear maps and matrices: Explicitly expressed which ones are f and g in an example of isomorphism (between the planar vectors vector space to the ordered pairs vector space).) Tag: Visual edit
diffhist Vector space 03:31 +19 Goodphy talk contribs (→Linear maps and matrices: Elaborated a sentence.) Tag: Visual edit

5 July 2025

diffhist m Set (mathematics) 14:28 −1 Kreyp talk contribs (→Infinite cardinalities)