Among the 2013 graduates in math that are leaving LSU, and are heading to a PhD program, are Nathan Bush (Math, Texas A&M), Daniel Case (Physics, Northwestern University), Donovan B. Myers (Physics, Urbana-Champaign), Thomas Naugle (Math, University of Mississippi), and Sarah Seger (Math, Rice University).
See our Placement of Undergraduate Students at Graduate Programs page for more examples on the placement of recent undergraduates.