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Graphclass: (2K2,claw)-free

Complement classes:  (C4,co-claw)-free 
See also: claw 2K2

Inclusions

Minimal superclasses:  (2K2,A,H)-free   (K2,3,P,P5)-free   (K2,3,P5)-free   N*   (P5,claw)-free   (co-(P),fork)-free 
Maximal subclasses:  (2K2,3K1,C5,co-(C6),co-(C7),co-(C8),co-(H),co-(K1,4),co-(X85))-free   (2K2,3K1,C5,co-(C6),co-(C7),co-(C8),co-(H),co-(X85))-free   (2K2,co-(C6),odd anti-cycle)-free   (co-(T3),co-(X81),co-cycle)-free   co-cycle-free 

Problems summary

Recognition:Polynomialdetails
Cliquewidth expression: Unbounded or NP-complete details
Cliquewidth:Unboundeddetails
Weighted independent set:Polynomialdetails
Independent set:Polynomialdetails
Domination: Unknown to ISGCI details

Algorithms for Recognition


Polynomial
     Finite forbidden subgraph characterization

Algorithms for Cliquewidth expression

See also : Cliquewidth : Weighted independent set : Domination

Algorithms for Cliquewidth

Unbounded from (2K2,co-(C6),odd anti-cycle)-free 
     From the complement .


Unbounded from (2K2,3K1,C5,co-(C6),co-(C7),co-(C8),co-(H),co-(X85))-free 
     From the complement .



Unbounded from (2K2,3K1,C5,co-(C6),co-(C7),co-(C8),co-(H),co-(K1,4),co-(X85))-free 
     From the complement .






Unbounded [1183]


See also : Cliquewidth expression

Algorithms for Weighted independent set

Polynomial [O(VE)] from (co-(P),fork)-free  [1125]
Polynomial [O(VE)] from (P5,fork)-free  [1125]
Polynomial [O(n^5)] from (K1,4,P5)-free  [1110]
Polynomial from nK2-free, fixed n  [1102]
Polynomial from (K2,3,P5)-free  [1110]
Polynomial from (P5,cricket)-free  [1110]
Polynomial from (P,P5)-free  [1353]
Polynomial from K2 cup claw-free  [1290]
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^8)] from (K4,4,P5)-free 
     Algorithm for (P_5,K_{m,m})-free (fixed m) [1118]

Polynomial from (K1,4,P,P5,fork)-free  [1103]
Polynomial [O(n^4)] from (P5,claw)-free  [1110]
Polynomial from claw-free  [783]
Polynomial from (P5,X82,X83)-free  [1246]
Polynomial from 2K2-free  [1160]
Polynomial from (K2,3,P,P5)-free  [1107]
See also : Cliquewidth expression : Independent set

Algorithms for Independent set

Polynomial from claw-free  [947]
Polynomial from (K3,3-e,P5)-free  [1246]
Polynomial [O(VE)] from (P,P5)-free  [1117]
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 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

See also : Cliquewidth expression