If give.series
takes its default value of FALSE
, return
a matrix a
of dimension c(2,u)
where u
is a
(complicated) function of n
. If v <- a[i,]
, then
v[1]/v[2]
is the \(i^{\mathrm{th}}\) term of the Farey
sequence. Note that det(a[(n):(n+1),])== -1
If give.series
is TRUE
, then return a matrix a
of
size c(4,u-1)
. If v <- a[i,]
, then v[1]/v[2]
and
v[3]/v[4]
are successive pairs of the Farey sequence. Note
that det(matrix(a[,i],2,2))== -1