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isStandard -- checks if a Young tableau is standard

Description

A standard Young tableau (SYT) has entries in $\N=\{1,2,3,\ldots,N\}$ where $N$ is the number of boxes, and the rows are columns are strictly increasing. Here, we also require $\lambda$ to have nonnegative parts, and inner shape $\mu=0$.

i1 : T = youngTableau(new Partition from {5,3,1}, toList(1..9))

     ┌───┬───┬───┬───┬───┐
o1 = │ 1 │ 2 │ 3 │ 4 │ 5 │
     ├───┼───┼───┼───┴───┘
     │ 6 │ 7 │ 8 │        
     ├───┼───┴───┘        
     │ 9 │                
     └───┘                

o1 : YoungTableau
i2 : isStandard T

o2 = true

See also

Ways to use isStandard:

  • isStandard(YoungTableau)

For the programmer

The object isStandard is a method function.


The source of this document is in /build/reproducible-path/macaulay2-1.26.05+ds/M2/Macaulay2/packages/Tableaux/documentation.m2:671:0.