You have studied spell-casting and alike and figured out, you know mostly nothing.

Prerequisites: base Knowledge (arcana) score 15, ability to cast arcane spells, Arcane Research 2 times

Benefit: Choose one arcane spell that you can cast to be your thesis spell. When casting that spell, you do so at +2 caster level and caster level caps that spell might have are increased by 2.

All your arcane research spells count as arcane thesis spells