His main research interests are: Buddhist philosophy as expressed in Sanskrit, and especially Madhyamaka; the relationship between philosophy and vyākaraṇa; the relationship between Madhyamaka, Yogācāra, and non-Mahāyāna Abhidharma; Buddhist Sūtras in Sanskrit and Tibetan; Vāstuśāstra; Buddhist kāvya.
During his stay in India and Nepal, Mattia had the opportunity to study with Prof. Rāṁśaṅkar Tripāṭhī, and has learnt from several Tibetan Buddhist masters, especially Ayang Rinpoche, Lama Gelong Tsultrim Gyaltsen, Lama Rinchen Phuntsok, and others.
Mattia has taught in Nepal (Rangjung Yeshe Institute), Thailand (Mahidol University), and, as visiting professor, Taiwan (Hua Fan University) and Germany (Hamburg University, as a Numata Visiting Professor), and has offered occasionally lectures and reading sessions in UK (Oxford University), Malaysia (Than Hsiang, Brickfields Mahāvihāra, MyBA), Japan (Kyoto University), India (Ashoka University, Delhi University) and mainland China. (Source Accessed Sep 8, 2021)