> A=matrix(c(1, 2, 
            -1, 1, 
            3, -1), 3, 2, byrow=TRUE)
> A
     [,1] [,2]
[1,]    1    2
[2,]   -1    1
[3,]    3   -1

u=c(0, Inf)

> A <= u
      [,1]  [,2]
[1,] FALSE  TRUE
[2,]  TRUE FALSE
[3,] FALSE  TRUE

Erwartet wrde
      [,1]  [,2]
[1,] FALSE  TRUE
[2,]  TRUE  TRUE
[3,] FALSE  TRUE

