ISGCI project home  All classes  Smallgraphs

Graphclass: (3K1,co-(T2),co-(X2),co-(X3),anti-hole)-free

Complement classes:  AT-free cap bipartite   (T2,X2,X3,hole,triangle)-free   bipartite permutation   bipartite tolerance 
See also: co-(X2) 3K1 co-(X3) anti-hole co-(T2)

Inclusions

Minimal superclasses:  (2,0)-colorable   AT-free cap claw-free   (BW3,W5,W7,X103,X104,X105,X106,X107,X108,X109,X110,X111,X112,X113,X114,X115,X116,X117,X118,X119,X120,X121,X122,X123,X124,X125,X126,X53,X88,co-(C6),co-(C8),co-(T2),co-(X3))-free   Berge cap bull-free   Berge cap claw-free   Bouchet   (C5,P5)-free   (C6,co-(C6))-free   (Cn+6,T2,X2,X3,X30,X31,X32,X33,X34,X36,XF12n+3,XF2n+1,XF3n,XF4n,XF52n+3,XF62n+2,co-(Cn+6),co-(T2),co-(X2),co-(X3),co-(X30),co-(X31),co-(X32),co-(X33),co-(X34),co-(X36),co-XF12n+3,co-XF2n+1,co-XF3n,co-XF4n,co-XF52n+3,co-XF62n+2,odd anti-hole)-free   (Cn+6,T2,X2,X3,X30,X31,X32,X33,X34,X36,XF12n+3,XF2n+1,XF3n,XF4n,XF52n+3,XF62n+2,co-(Cn+6),co-(T2),co-(X2),co-(X3),co-(X30),co-(X31),co-(X32),co-(X33),co-(X34),co-(X36),co-XF12n+3,co-XF2n+1,co-XF3n,co-XF4n,co-XF52n+3,co-XF62n+2,odd-hole)-free   (Cn+6,X37,claw,co-antenna,net,sun)-free   (K2,3,P,hole)-free   (P5,co-(C6))-free   (P5,co-(C6))-free cap weakly chordal   (P5,anti-hole,co-gem)-free   (P5,anti-hole)-free   (P5,bull)-free   (P5,claw)-free   (T2,X2,X3,X30,X31,X32,X33,X34,X35,X36,XF2n+1,XF3n,XF4n,anti-hole,co-XF12n+3,co-XF52n+3,co-XF62n+2,hole)-free   (X12,X5,X95,X96,X97,co-(X12),co-(X5),co-(X95),co-(X96),co-(X97),co-(claw cup triangle),claw cup triangle,co-cricket,co-twin-house,cricket,odd anti-hole,odd-hole,twin-house)-free   (XF12n+3,XF52n+3,XF62n+2,co-(Cn+6),co-(T2),co-(X2),co-(X3),co-(X30),co-(X31),co-(X32),co-(X33),co-(X34),co-(X35),co-(X36),co-XF2n+1,co-XF3n,co-XF4n,odd-hole)-free   (XF12n+3,XF52n+3,XF62n+2,co-(T2),co-(X2),co-(X3),co-(X30),co-(X31),co-(X32),co-(X33),co-(X34),co-(X35),co-(X36),anti-hole,co-XF2n+1,co-XF3n,co-XF4n,hole)-free   (co-(W4),co-(W5),co-butterfly)-free   (anti-hole,hole,sun)-free   (anti-hole,hole)-free   (anti-hole,odd anti-cycle)-free   bipartite cup co-bipartite cup co-line graphs of bipartite graphs cup line graphs of bipartite graphs   (bull,odd anti-hole,odd-hole)-free   bull-free cap perfect   circle   circle graph with equator   circular arc cap co-bipartite   circular arc cap comparability   (claw,odd anti-hole,odd-hole)-free   claw-free cap perfect   co-bipartite   co-comparability cap comparability   co-comparability graphs of posets of interval dimension 2, height 1   co-convex-round   co-permutation   co-tolerance   co-trapezoid   comparability   comparability cap weakly chordal   comparability graphs of dimension 2 posets   comparability graphs of posets of interval dimension 2   containment graph of intervals   containment graphs   convex-round   odd anti-cycle-free   odd-hole-free   perfect connected-dominant   permutation   sun-free cap weakly chordal   weakly chordal 
Maximal subclasses:  (2,0)-colorable cap chordal   (3K1,C4,C5)-free   (C4,odd anti-cycle)-free   (co-(2C4),co-(3K2),co-(C6),co-(E),co-(P2 cup P4),co-(P6),co-(X25),co-(X26),co-(X27),co-(X28),co-(X29),odd anti-cycle)-free   (co-(T2),co-cycle)-free 

Problems summary

Recognition:Lineardetails
Cliquewidth expression: Unbounded or NP-complete details
Cliquewidth:Unboundeddetails
Weighted independent set:Lineardetails
Independent set:Lineardetails
Domination:Lineardetails

Algorithms for Recognition

Linear
     From the complement .








Algorithms for Cliquewidth expression

See also : Cliquewidth : Weighted independent set : Domination

Algorithms for Cliquewidth






Unbounded
     From the complement .



See also : Cliquewidth expression

Algorithms for Weighted independent set

Linear from permutation  [1164]
Linear from AT-free cap claw-free  [1157]
Polynomial [O(VE)] from (P5,fork)-free  [1125]
Polynomial [O(n^5)] from (K1,4,P5)-free  [1110]
Polynomial from (K2,3,P5)-free  [1110]
Polynomial [O(V^5E^3)] from Berge cap bull-free  [1278]
Polynomial from (P5,cricket)-free  [1110]
Polynomial from (P,P5)-free  [1353]
Polynomial [O(n logn logn)] from trapezoid 
     Timebound valid only when given the model [1120] ; otherwise O(n^2).

Polynomial from K2 cup claw-free  [1290]
Polynomial [O(VE)] from co-gem-free 
     Because for all v: G[\co{N}(v)] is P_4-free

Polynomial from fork-free  [1099]
Polynomial [O(n^6)] from (K3,3,P5)-free 
     Algorithm for (P_5,K_{m,m})-free (fixed m) [1118]

Polynomial [O(n^4)] from AT-free  [160]
Polynomial [O(n^8)] from (K4,4,P5)-free 
     Algorithm for (P_5,K_{m,m})-free (fixed m) [1118]

Polynomial from (K2,3,P,hole)-free  [1107]
Polynomial [O(n^2)] from circle  [1121]
Polynomial from 4K1-free 
Polynomial from interval filament  [1159]
Polynomial [O(n^{6p+2})] from (p,q<=2)-colorable  [1116]
Polynomial from (K1,4,P,P5,fork)-free  [1103]
Polynomial [O(n^4)] from (P5,claw)-free  [1110]
Polynomial from claw-free  [783]
Polynomial [O(ln)] from circular arc 
     Where l is the minimum number of arcs passing through a given point on the circle. [995]

Polynomial from perfect  [476]
Polynomial from (P5,X82,X83)-free  [1246]
Polynomial from nearly bipartite 
Polynomial [O(VE)] from (bull,fork)-free  [1124] [307]
Polynomial from (K2,3,P,P5)-free  [1107]
Polynomial [O(V^4)] from weakly chordal  [997]
Polynomial from subtree overlap  [1123]
See also : Cliquewidth expression : Independent set

Algorithms for Independent set

Linear [O(n)] from circular arc  [1105] [1106] [1158]
Linear from co-comparability  [1100]
Polynomial from claw-free  [947]
Polynomial from co-hereditary clique-Helly  [1298]
Polynomial from comparability  [453]
Polynomial from (K3,3-e,P5)-free  [1246]
Polynomial [O(VE)] from (P,P5)-free  [1117]
Polynomial [O(VE)] from weakly chordal  [530] [1119]
Polynomial from (E,P)-free  [1305]
Polynomial from (K2,3,P,P5)-free  [1346] [1107]
Polynomial [O(V^8)] from (P,P7)-free  [1351]
Polynomial from (C6,K3,3+e,P,P7,X37,X41)-free  [1346]
Polynomial [O(VE)] from (claw,net)-free  [1127] [515]
Polynomial from (P,T2)-free  [1305]
Polynomial [O(nm)] from (K3,3-e,P5,X98)-free  [1117]
Polynomial from (P,star1,2,5)-free  [1349]
Polynomial [O(V^{5})] from (K3,3-e,P5,X99)-free  [1307]
Polynomial from (P,P8)-free  [1306]
Open from (P,star1,2,3)-free  [1351]
Open from (P,star1,2,4)-free  [1351] [1306]
See also : Weighted independent set

Algorithms for Domination

Linear from circular arc  [1143] [1158]
Linear [O(V)] from permutation  [1342] [1147] [1148] [1149] [1165]
Polynomial from k-polygon  [352]
Polynomial from co-comparability  [1150] [1151]
Polynomial from AT-free  [1152]
Polynomial [O(n^2 log^5 n)] from co-bounded tolerance  [1172]
     Assuming a square embedding of the graph is given; finding this is an open problem.

Polynomial [O(VE)] from (claw,net)-free  [1127]
Polynomial from trapezoid  [1155]
See also : Cliquewidth expression