In computation, we often want to build sequences such as: $x$ is the sequence of points from $-2$ to $3$ in steps of $0.1$; so

$$x=(-2,-1.9,-1.8,\dots,2.9,3).$$

Then we can apply operations like $y=x^{2}-3$, so obtain

$$y=(1,0.61,0.24,\dots,5.41,6).$$

In LAB100, the programme $R$ writes this as

$$x<-\quad seq(-2,3,by=0.1)$$

$$y<-\quad x\,\widehat{}\,\,2-3$$