Weak Ω-categories from Intensional Type Theory

@inproceedings{Lumsdaine2008WeakF,
  title={Weak Ω-categories from Intensional Type Theory},
  author={Peter LeFanu Lumsdaine},
  year={2008}
}
We show that for any type in Martin-Löf Intensional Type Theory, the terms of that type and its higher identity types form a weak ω-category in the sense of Leinster. Precisely, we construct a contractible globular operad PMLId of definable “composition laws”, and give an action of this operad on the terms of any type and its identity types. 
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