After receiving his
laurea from the
Sapienza University of Rome, Pannelli became at the
University of Pavia a
libero docente of
projective geometry and from 1893 to 1899 a
libero docente of
descriptive geometry. Later he taught at the
Istituto Tecnico di Roma and held academic positions there.
Francesco Severi stated that Pannelli was one of the best of those Italian algebraic geometers who were not appointed to a professorial chair. Some of Pannelli's publications in algebraic geometry received the ministerial prize of the
Accademia dei Lincei. ==Selected publications==