{ localUrl: '../page/sign_homomorphism_symmetric_group.html', arbitalUrl: 'https://arbital.com/p/sign_homomorphism_symmetric_group', rawJsonUrl: '../raw/4hk.json', likeableId: '0', likeableType: 'page', myLikeValue: '0', likeCount: '0', dislikeCount: '0', likeScore: '0', individualLikes: [], pageId: 'sign_homomorphism_symmetric_group', edit: '1', editSummary: '', prevEdit: '0', currentEdit: '1', wasPublished: 'true', type: 'wiki', title: 'Sign homomorphism (from the symmetric group)', clickbait: 'The sign homomorphism is how we extract the alternating group from the symmetric group.', textLength: '594', alias: 'sign_homomorphism_symmetric_group', externalUrl: '', sortChildrenBy: 'likes', hasVote: 'false', voteType: '', votesAnonymous: 'false', editCreatorId: 'PatrickStevens', editCreatedAt: '2016-06-17 14:13:38', pageCreatorId: 'PatrickStevens', pageCreatedAt: '2016-06-17 14:13:38', seeDomainId: '0', editDomainId: 'AlexeiAndreev', submitToDomainId: '0', isAutosave: 'false', isSnapshot: 'false', isLiveEdit: 'true', isMinorEdit: 'false', indirectTeacher: 'false', todoCount: '0', isEditorComment: 'false', isApprovedComment: 'true', isResolved: 'false', snapshotText: '', anchorContext: '', anchorText: '', anchorOffset: '0', mergedInto: '', isDeleted: 'false', viewCount: '38', text: 'The sign [47t homomorphism] is given by sending a permutation $\\sigma$ in the [-497] $S_n$ to $0$ if we can make $\\sigma$ by multiplying together an even number of [4cn transpositions], and to $1$ otherwise.\n\n%%%knows-requisite([modular_arithmetic]):\nEquivalently, it is given by sending $\\sigma$ to the number of transpositions making it up, [modular_arithmetic modulo] $2$.\n%%%\n\nThe sign homomorphism [4hh is well-defined].\n\n%%%knows-requisite([quotient_group]):\nThe [-alternating_group] is obtained by taking the [quotient_group quotient] of the symmetric group by the sign homomorphism.\n%%%', metaText: '', isTextLoaded: 'true', isSubscribedToDiscussion: 'false', isSubscribedToUser: 'false', isSubscribedAsMaintainer: 'false', discussionSubscriberCount: '1', maintainerCount: '1', userSubscriberCount: '0', lastVisit: '', hasDraft: 'false', votes: [], voteSummary: 'null', muVoteSummary: '0', voteScaling: '0', currentUserVote: '-2', voteCount: '0', lockedVoteType: '', maxEditEver: '0', redLinkCount: '0', lockedBy: '', lockedUntil: '', nextPageId: '', prevPageId: '', usedAsMastery: 'false', proposalEditNum: '0', permissions: { edit: { has: 'false', reason: 'You don't have domain permission to edit this page' }, proposeEdit: { has: 'true', reason: '' }, delete: { has: 'false', reason: 'You don't have domain permission to delete this page' }, comment: { has: 'false', reason: 'You can't comment in this domain because you are not a member' }, proposeComment: { has: 'true', reason: '' } }, summaries: {}, creatorIds: [ 'PatrickStevens' ], childIds: [], parentIds: [ 'symmetric_group' ], commentIds: [], questionIds: [], tagIds: [ 'definition_meta_tag' ], relatedIds: [], markIds: [], explanations: [], learnMore: [], requirements: [ { id: '4126', parentId: 'group_homomorphism', childId: 'sign_homomorphism_symmetric_group', type: 'requirement', creatorId: 'AlexeiAndreev', createdAt: '2016-06-17 21:58:56', level: '1', isStrong: 'false', everPublished: 'true' }, { id: '4128', parentId: 'symmetric_group', childId: 'sign_homomorphism_symmetric_group', type: 'requirement', creatorId: 'AlexeiAndreev', createdAt: '2016-06-17 21:58:56', level: '1', isStrong: 'false', everPublished: 'true' } ], subjects: [], lenses: [], lensParentId: '', pathPages: [], learnMoreTaughtMap: {}, learnMoreCoveredMap: {}, learnMoreRequiredMap: {}, editHistory: {}, domainSubmissions: {}, answers: [], answerCount: '0', commentCount: '0', newCommentCount: '0', linkedMarkCount: '0', changeLogs: [ { likeableId: '0', likeableType: 'changeLog', myLikeValue: '0', likeCount: '0', dislikeCount: '0', likeScore: '0', individualLikes: [], id: '19101', pageId: 'sign_homomorphism_symmetric_group', userId: 'PatrickStevens', edit: '0', type: 'newParent', createdAt: '2016-08-24 15:31:20', auxPageId: 'symmetric_group', oldSettingsValue: '', newSettingsValue: '' }, { likeableId: '0', likeableType: 'changeLog', myLikeValue: '0', likeCount: '0', dislikeCount: '0', likeScore: '0', individualLikes: [], id: '19099', pageId: 'sign_homomorphism_symmetric_group', userId: 'PatrickStevens', edit: '0', type: 'deleteParent', createdAt: '2016-08-24 15:31:15', auxPageId: 'group_mathematics', oldSettingsValue: '', newSettingsValue: '' }, { likeableId: '0', likeableType: 'changeLog', myLikeValue: '0', likeCount: '0', dislikeCount: '0', likeScore: '0', individualLikes: [], id: '13513', pageId: 'sign_homomorphism_symmetric_group', userId: 'PatrickStevens', edit: '1', type: 'newEdit', createdAt: '2016-06-17 14:13:38', auxPageId: '', oldSettingsValue: '', newSettingsValue: '' }, { likeableId: '0', likeableType: 'changeLog', myLikeValue: '0', likeCount: '0', dislikeCount: '0', likeScore: '0', individualLikes: [], id: '13508', pageId: 'sign_homomorphism_symmetric_group', userId: 'PatrickStevens', edit: '1', type: 'newRequirement', createdAt: '2016-06-17 14:11:55', auxPageId: 'symmetric_group', oldSettingsValue: '', newSettingsValue: '' }, { likeableId: '0', likeableType: 'changeLog', myLikeValue: '0', likeCount: '0', dislikeCount: '0', likeScore: '0', individualLikes: [], id: '13504', pageId: 'sign_homomorphism_symmetric_group', userId: 'PatrickStevens', edit: '1', type: 'newTag', createdAt: '2016-06-17 14:01:17', auxPageId: 'definition_meta_tag', oldSettingsValue: '', newSettingsValue: '' }, { likeableId: '0', likeableType: 'changeLog', myLikeValue: '0', likeCount: '0', dislikeCount: '0', likeScore: '0', individualLikes: [], id: '13503', pageId: 'sign_homomorphism_symmetric_group', userId: 'PatrickStevens', edit: '1', type: 'newRequirement', createdAt: '2016-06-17 14:01:07', auxPageId: 'group_homomorphism', oldSettingsValue: '', newSettingsValue: '' }, { likeableId: '0', likeableType: 'changeLog', myLikeValue: '0', likeCount: '0', dislikeCount: '0', likeScore: '0', individualLikes: [], id: '13502', pageId: 'sign_homomorphism_symmetric_group', userId: 'PatrickStevens', edit: '1', type: 'newParent', createdAt: '2016-06-17 13:59:28', auxPageId: 'group_mathematics', oldSettingsValue: '', newSettingsValue: '' } ], feedSubmissions: [], searchStrings: {}, hasChildren: 'false', hasParents: 'true', redAliases: {}, improvementTagIds: [], nonMetaTagIds: [], todos: [], slowDownMap: 'null', speedUpMap: 'null', arcPageIds: 'null', contentRequests: {} }