| order | 3420 |
| isoclinism | isoclinic class of PSL(2,𝔽19) |
| automorphism | Aut(G) = PGL(2,𝔽19) (order 6840) · Inn(G) = G · Out(G) = C2 |
| homology | Abelianization (H1) = C1 · Schur multiplier (H2) = C2 |
| projective special linear | PSL(2,𝔽19) |
| projective symplectic | PSp(2,𝔽19) |
| projective special unitary | PSU(2,𝔽19) |
| subgroup | G/H | |
|---|---|---|
| center, Frattini, hypercenter | C1 | G |
| commutator, hypocenter | G | C1 |
| LCS | G | |
| UCS | C1 | |
19 conjugacy classes of subgroups.
| minimal degree | μ(G) = 20 |
| transitive degree | μt(G) = 20 |
A minimal faithful permutation representation — 2 generators on 20 points:
(3,19,17,15,13,11,9,7,5)(4,20,18,16,14,12,10,8,6);(1,2,12)(3,11,13)(4,17,6)(5,14,8)(7,20,18)(10,19,16)| C1 | C2 | C3 | C4 | C5 | C6 | C7 | C8 | C9 | C10 | C11 | C12 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| size | 1 | 171 | 180 | 180 | 342 | 342 | 342 | 342 | 380 | 380 | 380 | 380 |
| order | 1 | 2 | 19 | 19 | 5 | 5 | 10 | 10 | 3 | 9 | 9 | 9 |
| χ1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 |
| χ2 | 9 | 1 | -1 | -1 | 1 | 1 | 0 | 0 | 0 | 0 | ||
| χ3 | 9 | 1 | -1 | -1 | 1 | 1 | 0 | 0 | 0 | 0 | ||
| χ4 | 18 | 2 | -1 | -1 | 0 | 0 | 0 | 0 | ||||
| χ5 | 18 | 2 | -1 | -1 | 0 | 0 | 0 | 0 | ||||
| χ6 | 18 | -2 | -1 | -1 | 0 | 0 | 0 | 0 | ||||
| χ7 | 18 | -2 | -1 | -1 | 0 | 0 | 0 | 0 | ||||
| χ8 | 19 | -1 | 0 | 0 | -1 | -1 | -1 | -1 | 1 | 1 | 1 | 1 |
| χ9 | 20 | 0 | 1 | 1 | 0 | 0 | 0 | 0 | 2 | -1 | -1 | -1 |
| χ10 | 20 | 0 | 1 | 1 | 0 | 0 | 0 | 0 | -1 | −ζ4−ζ7+ζ8−ζ13−ζ16+ζ17−ζ22+ζ26−ζ31−ζ34−ζ43+ζ44−ζ49−ζ52+ζ53−ζ58−ζ61+ζ62−ζ67+ζ71−ζ79−ζ88+ζ89−ζ94−ζ97+ζ98−ζ103−ζ106+ζ107−ζ112+ζ116−ζ121−ζ124+ζ134−ζ139−ζ142+ζ143−ζ148−ζ151−ζ157+ζ161−ζ166−ζ169−ζ178+ζ179−ζ184−ζ187+ζ188−ζ193−ζ196+ζ197−ζ202+ζ206−ζ211−ζ214−ζ223+ζ224−ζ229−ζ232+ζ233−ζ238−ζ241+ζ242+ζ251−ζ256−ζ259−ζ268+ζ269−ζ274−ζ277+ζ278−ζ283−ζ286+ζ287−ζ292+ζ296−ζ301−ζ313+ζ314−ζ319−ζ322−ζ328−ζ331+ζ332−ζ337+ζ341−ζ346−ζ349−ζ358+ζ359−ζ364−ζ367+ζ368−ζ373−ζ376+ζ377−ζ382+ζ386−ζ391−ζ394−ζ403+ζ404−ζ409−ζ412+ζ413−ζ421+ζ422−ζ427+ζ431−ζ436−ζ439−ζ448+ζ449−ζ454−ζ457+ζ458−ζ463−ζ466+ζ467−ζ472+ζ476−ζ481−ζ484−ζ493−ζ499−ζ502+ζ503−ζ508−ζ511+ζ512−ζ517+ζ521−ζ526−ζ529−ζ538+ζ539−ζ544−ζ547+ζ548−ζ553−ζ556+ζ557−ζ562+ζ566−ζ571−ζ574−ζ583+ζ584−ζ592+ζ593−ζ598−ζ601+ζ602−ζ607+ζ611−ζ616−ζ619−ζ628+ζ629−ζ634−ζ637+ζ638−ζ643+ζ647−ζ652+ζ656−ζ661−ζ664−ζ673+ζ674−ζ679−ζ682+ζ683−ζ688−ζ691+ζ692−ζ697+ζ701−ζ706−ζ709−ζ718+ζ719−ζ724−ζ727+ζ728−ζ733−ζ736+ζ737−ζ742+ζ746−ζ751−ζ754−ζ763+ζ764−ζ769−ζ772+ζ773−ζ778−ζ781+ζ782−ζ787+ζ791−ζ796−ζ799−ζ808+ζ809−ζ814+ζ818−ζ823−ζ826+ζ827−ζ832−ζ841−ζ844−ζ853+ζ854 | ζ4+ζ13+ζ14+ζ22+ζ23+ζ31+ζ32+ζ41+ζ49+ζ58+ζ59+ζ67+ζ68+ζ77+ζ86+ζ94+ζ103+ζ104+ζ112+ζ113+ζ121+ζ122+ζ131+ζ139+ζ148+ζ149+ζ157+ζ158+ζ166+ζ167+ζ176+ζ184+ζ193+ζ194+ζ202+ζ203+ζ211+ζ212+ζ221+ζ229+ζ238+ζ239+ζ248+ζ256+ζ257+ζ274+ζ283+ζ284+ζ292+ζ293+ζ301+ζ302+ζ311+ζ319+ζ328+ζ329+ζ337+ζ338+ζ346+ζ347+ζ356+ζ364+ζ373+ζ374+ζ382+ζ383+ζ391+ζ392+ζ401+ζ409+ζ419+ζ427+ζ428+ζ436+ζ446+ζ454+ζ463+ζ464+ζ472+ζ473+ζ481+ζ482+ζ491+ζ499+ζ508+ζ509+ζ517+ζ518+ζ526+ζ527+ζ536+ζ544+ζ553+ζ554+ζ562+ζ563+ζ571+ζ572+ζ581+ζ598+ζ599+ζ607+ζ616+ζ617+ζ626+ζ634+ζ643+ζ644+ζ652+ζ653+ζ661+ζ662+ζ671+ζ679+ζ688+ζ689+ζ697+ζ698+ζ706+ζ707+ζ716+ζ724+ζ733+ζ734+ζ742+ζ743+ζ751+ζ752+ζ761+ζ769+ζ778+ζ787+ζ788+ζ796+ζ797+ζ806+ζ814+ζ823+ζ824+ζ832+ζ833+ζ841+ζ842+ζ851 | ζ7−ζ8−ζ14+ζ16−ζ17−ζ23−ζ26−ζ32+ζ34−ζ41+ζ43−ζ44+ζ52−ζ53−ζ59+ζ61−ζ62−ζ68−ζ71−ζ77+ζ79−ζ86+ζ88−ζ89+ζ97−ζ98−ζ104+ζ106−ζ107−ζ113−ζ116−ζ122+ζ124−ζ131−ζ134+ζ142−ζ143−ζ149+ζ151−ζ158−ζ161−ζ167+ζ169−ζ176+ζ178−ζ179+ζ187−ζ188−ζ194+ζ196−ζ197−ζ203−ζ206−ζ212+ζ214−ζ221+ζ223−ζ224+ζ232−ζ233−ζ239+ζ241−ζ242−ζ248−ζ251−ζ257+ζ259+ζ268−ζ269+ζ277−ζ278−ζ284+ζ286−ζ287−ζ293−ζ296−ζ302−ζ311+ζ313−ζ314+ζ322−ζ329+ζ331−ζ332−ζ338−ζ341−ζ347+ζ349−ζ356+ζ358−ζ359+ζ367−ζ368−ζ374+ζ376−ζ377−ζ383−ζ386−ζ392+ζ394−ζ401+ζ403−ζ404+ζ412−ζ413−ζ419+ζ421−ζ422−ζ428−ζ431+ζ439−ζ446+ζ448−ζ449+ζ457−ζ458−ζ464+ζ466−ζ467−ζ473−ζ476−ζ482+ζ484−ζ491+ζ493+ζ502−ζ503−ζ509+ζ511−ζ512−ζ518−ζ521−ζ527+ζ529−ζ536+ζ538−ζ539+ζ547−ζ548−ζ554+ζ556−ζ557−ζ563−ζ566−ζ572+ζ574−ζ581+ζ583−ζ584+ζ592−ζ593−ζ599+ζ601−ζ602−ζ611−ζ617+ζ619−ζ626+ζ628−ζ629+ζ637−ζ638−ζ644−ζ647−ζ653−ζ656−ζ662+ζ664−ζ671+ζ673−ζ674+ζ682−ζ683−ζ689+ζ691−ζ692−ζ698−ζ701−ζ707+ζ709−ζ716+ζ718−ζ719+ζ727−ζ728−ζ734+ζ736−ζ737−ζ743−ζ746−ζ752+ζ754−ζ761+ζ763−ζ764+ζ772−ζ773+ζ781−ζ782−ζ788−ζ791−ζ797+ζ799−ζ806+ζ808−ζ809−ζ818−ζ824+ζ826−ζ827−ζ833−ζ842+ζ844−ζ851+ζ853−ζ854 |
| χ11 | 20 | 0 | 1 | 1 | 0 | 0 | 0 | 0 | -1 | ζ4+ζ13+ζ14+ζ22+ζ23+ζ31+ζ32+ζ41+ζ49+ζ58+ζ59+ζ67+ζ68+ζ77+ζ86+ζ94+ζ103+ζ104+ζ112+ζ113+ζ121+ζ122+ζ131+ζ139+ζ148+ζ149+ζ157+ζ158+ζ166+ζ167+ζ176+ζ184+ζ193+ζ194+ζ202+ζ203+ζ211+ζ212+ζ221+ζ229+ζ238+ζ239+ζ248+ζ256+ζ257+ζ274+ζ283+ζ284+ζ292+ζ293+ζ301+ζ302+ζ311+ζ319+ζ328+ζ329+ζ337+ζ338+ζ346+ζ347+ζ356+ζ364+ζ373+ζ374+ζ382+ζ383+ζ391+ζ392+ζ401+ζ409+ζ419+ζ427+ζ428+ζ436+ζ446+ζ454+ζ463+ζ464+ζ472+ζ473+ζ481+ζ482+ζ491+ζ499+ζ508+ζ509+ζ517+ζ518+ζ526+ζ527+ζ536+ζ544+ζ553+ζ554+ζ562+ζ563+ζ571+ζ572+ζ581+ζ598+ζ599+ζ607+ζ616+ζ617+ζ626+ζ634+ζ643+ζ644+ζ652+ζ653+ζ661+ζ662+ζ671+ζ679+ζ688+ζ689+ζ697+ζ698+ζ706+ζ707+ζ716+ζ724+ζ733+ζ734+ζ742+ζ743+ζ751+ζ752+ζ761+ζ769+ζ778+ζ787+ζ788+ζ796+ζ797+ζ806+ζ814+ζ823+ζ824+ζ832+ζ833+ζ841+ζ842+ζ851 | ζ7−ζ8−ζ14+ζ16−ζ17−ζ23−ζ26−ζ32+ζ34−ζ41+ζ43−ζ44+ζ52−ζ53−ζ59+ζ61−ζ62−ζ68−ζ71−ζ77+ζ79−ζ86+ζ88−ζ89+ζ97−ζ98−ζ104+ζ106−ζ107−ζ113−ζ116−ζ122+ζ124−ζ131−ζ134+ζ142−ζ143−ζ149+ζ151−ζ158−ζ161−ζ167+ζ169−ζ176+ζ178−ζ179+ζ187−ζ188−ζ194+ζ196−ζ197−ζ203−ζ206−ζ212+ζ214−ζ221+ζ223−ζ224+ζ232−ζ233−ζ239+ζ241−ζ242−ζ248−ζ251−ζ257+ζ259+ζ268−ζ269+ζ277−ζ278−ζ284+ζ286−ζ287−ζ293−ζ296−ζ302−ζ311+ζ313−ζ314+ζ322−ζ329+ζ331−ζ332−ζ338−ζ341−ζ347+ζ349−ζ356+ζ358−ζ359+ζ367−ζ368−ζ374+ζ376−ζ377−ζ383−ζ386−ζ392+ζ394−ζ401+ζ403−ζ404+ζ412−ζ413−ζ419+ζ421−ζ422−ζ428−ζ431+ζ439−ζ446+ζ448−ζ449+ζ457−ζ458−ζ464+ζ466−ζ467−ζ473−ζ476−ζ482+ζ484−ζ491+ζ493+ζ502−ζ503−ζ509+ζ511−ζ512−ζ518−ζ521−ζ527+ζ529−ζ536+ζ538−ζ539+ζ547−ζ548−ζ554+ζ556−ζ557−ζ563−ζ566−ζ572+ζ574−ζ581+ζ583−ζ584+ζ592−ζ593−ζ599+ζ601−ζ602−ζ611−ζ617+ζ619−ζ626+ζ628−ζ629+ζ637−ζ638−ζ644−ζ647−ζ653−ζ656−ζ662+ζ664−ζ671+ζ673−ζ674+ζ682−ζ683−ζ689+ζ691−ζ692−ζ698−ζ701−ζ707+ζ709−ζ716+ζ718−ζ719+ζ727−ζ728−ζ734+ζ736−ζ737−ζ743−ζ746−ζ752+ζ754−ζ761+ζ763−ζ764+ζ772−ζ773+ζ781−ζ782−ζ788−ζ791−ζ797+ζ799−ζ806+ζ808−ζ809−ζ818−ζ824+ζ826−ζ827−ζ833−ζ842+ζ844−ζ851+ζ853−ζ854 | −ζ4−ζ7+ζ8−ζ13−ζ16+ζ17−ζ22+ζ26−ζ31−ζ34−ζ43+ζ44−ζ49−ζ52+ζ53−ζ58−ζ61+ζ62−ζ67+ζ71−ζ79−ζ88+ζ89−ζ94−ζ97+ζ98−ζ103−ζ106+ζ107−ζ112+ζ116−ζ121−ζ124+ζ134−ζ139−ζ142+ζ143−ζ148−ζ151−ζ157+ζ161−ζ166−ζ169−ζ178+ζ179−ζ184−ζ187+ζ188−ζ193−ζ196+ζ197−ζ202+ζ206−ζ211−ζ214−ζ223+ζ224−ζ229−ζ232+ζ233−ζ238−ζ241+ζ242+ζ251−ζ256−ζ259−ζ268+ζ269−ζ274−ζ277+ζ278−ζ283−ζ286+ζ287−ζ292+ζ296−ζ301−ζ313+ζ314−ζ319−ζ322−ζ328−ζ331+ζ332−ζ337+ζ341−ζ346−ζ349−ζ358+ζ359−ζ364−ζ367+ζ368−ζ373−ζ376+ζ377−ζ382+ζ386−ζ391−ζ394−ζ403+ζ404−ζ409−ζ412+ζ413−ζ421+ζ422−ζ427+ζ431−ζ436−ζ439−ζ448+ζ449−ζ454−ζ457+ζ458−ζ463−ζ466+ζ467−ζ472+ζ476−ζ481−ζ484−ζ493−ζ499−ζ502+ζ503−ζ508−ζ511+ζ512−ζ517+ζ521−ζ526−ζ529−ζ538+ζ539−ζ544−ζ547+ζ548−ζ553−ζ556+ζ557−ζ562+ζ566−ζ571−ζ574−ζ583+ζ584−ζ592+ζ593−ζ598−ζ601+ζ602−ζ607+ζ611−ζ616−ζ619−ζ628+ζ629−ζ634−ζ637+ζ638−ζ643+ζ647−ζ652+ζ656−ζ661−ζ664−ζ673+ζ674−ζ679−ζ682+ζ683−ζ688−ζ691+ζ692−ζ697+ζ701−ζ706−ζ709−ζ718+ζ719−ζ724−ζ727+ζ728−ζ733−ζ736+ζ737−ζ742+ζ746−ζ751−ζ754−ζ763+ζ764−ζ769−ζ772+ζ773−ζ778−ζ781+ζ782−ζ787+ζ791−ζ796−ζ799−ζ808+ζ809−ζ814+ζ818−ζ823−ζ826+ζ827−ζ832−ζ841−ζ844−ζ853+ζ854 |
| χ12 | 20 | 0 | 1 | 1 | 0 | 0 | 0 | 0 | -1 | ζ7−ζ8−ζ14+ζ16−ζ17−ζ23−ζ26−ζ32+ζ34−ζ41+ζ43−ζ44+ζ52−ζ53−ζ59+ζ61−ζ62−ζ68−ζ71−ζ77+ζ79−ζ86+ζ88−ζ89+ζ97−ζ98−ζ104+ζ106−ζ107−ζ113−ζ116−ζ122+ζ124−ζ131−ζ134+ζ142−ζ143−ζ149+ζ151−ζ158−ζ161−ζ167+ζ169−ζ176+ζ178−ζ179+ζ187−ζ188−ζ194+ζ196−ζ197−ζ203−ζ206−ζ212+ζ214−ζ221+ζ223−ζ224+ζ232−ζ233−ζ239+ζ241−ζ242−ζ248−ζ251−ζ257+ζ259+ζ268−ζ269+ζ277−ζ278−ζ284+ζ286−ζ287−ζ293−ζ296−ζ302−ζ311+ζ313−ζ314+ζ322−ζ329+ζ331−ζ332−ζ338−ζ341−ζ347+ζ349−ζ356+ζ358−ζ359+ζ367−ζ368−ζ374+ζ376−ζ377−ζ383−ζ386−ζ392+ζ394−ζ401+ζ403−ζ404+ζ412−ζ413−ζ419+ζ421−ζ422−ζ428−ζ431+ζ439−ζ446+ζ448−ζ449+ζ457−ζ458−ζ464+ζ466−ζ467−ζ473−ζ476−ζ482+ζ484−ζ491+ζ493+ζ502−ζ503−ζ509+ζ511−ζ512−ζ518−ζ521−ζ527+ζ529−ζ536+ζ538−ζ539+ζ547−ζ548−ζ554+ζ556−ζ557−ζ563−ζ566−ζ572+ζ574−ζ581+ζ583−ζ584+ζ592−ζ593−ζ599+ζ601−ζ602−ζ611−ζ617+ζ619−ζ626+ζ628−ζ629+ζ637−ζ638−ζ644−ζ647−ζ653−ζ656−ζ662+ζ664−ζ671+ζ673−ζ674+ζ682−ζ683−ζ689+ζ691−ζ692−ζ698−ζ701−ζ707+ζ709−ζ716+ζ718−ζ719+ζ727−ζ728−ζ734+ζ736−ζ737−ζ743−ζ746−ζ752+ζ754−ζ761+ζ763−ζ764+ζ772−ζ773+ζ781−ζ782−ζ788−ζ791−ζ797+ζ799−ζ806+ζ808−ζ809−ζ818−ζ824+ζ826−ζ827−ζ833−ζ842+ζ844−ζ851+ζ853−ζ854 | −ζ4−ζ7+ζ8−ζ13−ζ16+ζ17−ζ22+ζ26−ζ31−ζ34−ζ43+ζ44−ζ49−ζ52+ζ53−ζ58−ζ61+ζ62−ζ67+ζ71−ζ79−ζ88+ζ89−ζ94−ζ97+ζ98−ζ103−ζ106+ζ107−ζ112+ζ116−ζ121−ζ124+ζ134−ζ139−ζ142+ζ143−ζ148−ζ151−ζ157+ζ161−ζ166−ζ169−ζ178+ζ179−ζ184−ζ187+ζ188−ζ193−ζ196+ζ197−ζ202+ζ206−ζ211−ζ214−ζ223+ζ224−ζ229−ζ232+ζ233−ζ238−ζ241+ζ242+ζ251−ζ256−ζ259−ζ268+ζ269−ζ274−ζ277+ζ278−ζ283−ζ286+ζ287−ζ292+ζ296−ζ301−ζ313+ζ314−ζ319−ζ322−ζ328−ζ331+ζ332−ζ337+ζ341−ζ346−ζ349−ζ358+ζ359−ζ364−ζ367+ζ368−ζ373−ζ376+ζ377−ζ382+ζ386−ζ391−ζ394−ζ403+ζ404−ζ409−ζ412+ζ413−ζ421+ζ422−ζ427+ζ431−ζ436−ζ439−ζ448+ζ449−ζ454−ζ457+ζ458−ζ463−ζ466+ζ467−ζ472+ζ476−ζ481−ζ484−ζ493−ζ499−ζ502+ζ503−ζ508−ζ511+ζ512−ζ517+ζ521−ζ526−ζ529−ζ538+ζ539−ζ544−ζ547+ζ548−ζ553−ζ556+ζ557−ζ562+ζ566−ζ571−ζ574−ζ583+ζ584−ζ592+ζ593−ζ598−ζ601+ζ602−ζ607+ζ611−ζ616−ζ619−ζ628+ζ629−ζ634−ζ637+ζ638−ζ643+ζ647−ζ652+ζ656−ζ661−ζ664−ζ673+ζ674−ζ679−ζ682+ζ683−ζ688−ζ691+ζ692−ζ697+ζ701−ζ706−ζ709−ζ718+ζ719−ζ724−ζ727+ζ728−ζ733−ζ736+ζ737−ζ742+ζ746−ζ751−ζ754−ζ763+ζ764−ζ769−ζ772+ζ773−ζ778−ζ781+ζ782−ζ787+ζ791−ζ796−ζ799−ζ808+ζ809−ζ814+ζ818−ζ823−ζ826+ζ827−ζ832−ζ841−ζ844−ζ853+ζ854 | ζ4+ζ13+ζ14+ζ22+ζ23+ζ31+ζ32+ζ41+ζ49+ζ58+ζ59+ζ67+ζ68+ζ77+ζ86+ζ94+ζ103+ζ104+ζ112+ζ113+ζ121+ζ122+ζ131+ζ139+ζ148+ζ149+ζ157+ζ158+ζ166+ζ167+ζ176+ζ184+ζ193+ζ194+ζ202+ζ203+ζ211+ζ212+ζ221+ζ229+ζ238+ζ239+ζ248+ζ256+ζ257+ζ274+ζ283+ζ284+ζ292+ζ293+ζ301+ζ302+ζ311+ζ319+ζ328+ζ329+ζ337+ζ338+ζ346+ζ347+ζ356+ζ364+ζ373+ζ374+ζ382+ζ383+ζ391+ζ392+ζ401+ζ409+ζ419+ζ427+ζ428+ζ436+ζ446+ζ454+ζ463+ζ464+ζ472+ζ473+ζ481+ζ482+ζ491+ζ499+ζ508+ζ509+ζ517+ζ518+ζ526+ζ527+ζ536+ζ544+ζ553+ζ554+ζ562+ζ563+ζ571+ζ572+ζ581+ζ598+ζ599+ζ607+ζ616+ζ617+ζ626+ζ634+ζ643+ζ644+ζ652+ζ653+ζ661+ζ662+ζ671+ζ679+ζ688+ζ689+ζ697+ζ698+ζ706+ζ707+ζ716+ζ724+ζ733+ζ734+ζ742+ζ743+ζ751+ζ752+ζ761+ζ769+ζ778+ζ787+ζ788+ζ796+ζ797+ζ806+ζ814+ζ823+ζ824+ζ832+ζ833+ζ841+ζ842+ζ851 |
Here ζ is a primitive root of unity of order 855 (ζ855 = 1); i = ζ213.
Construct this group in GAP via the SmallGroups library:
gap> SmallGroup(3420, 144);