- #1
burritoloco
- 83
- 0
Hi,
Let [itex]f[/itex] be a linear transformation over some finite field, and denote [itex]f^{n} := f \circ f \circ \cdots \circ f[/itex], [itex]n[/itex] times. What do we know about the linear maps [itex]f[/itex] such that there exist an integer [itex]n[/itex] for which [itex]f^{N} = f^n[/itex] for all [itex]N \geq n[/itex]? Also, how about linear maps [itex]g[/itex] satisfying [itex]g = g \circ f^i [/itex] for any [itex] i\geq 0 [/itex]? Something tells me that I've seen this before in my undergrad years but my memory is very vague on this. Thanks!
Let [itex]f[/itex] be a linear transformation over some finite field, and denote [itex]f^{n} := f \circ f \circ \cdots \circ f[/itex], [itex]n[/itex] times. What do we know about the linear maps [itex]f[/itex] such that there exist an integer [itex]n[/itex] for which [itex]f^{N} = f^n[/itex] for all [itex]N \geq n[/itex]? Also, how about linear maps [itex]g[/itex] satisfying [itex]g = g \circ f^i [/itex] for any [itex] i\geq 0 [/itex]? Something tells me that I've seen this before in my undergrad years but my memory is very vague on this. Thanks!