Polarized and focalized linear and classical proofs

We give the precise correspondence between polarized linear logic and polarized classical logic. The properties of focalization and reversion of linear proofs are at the heart of our analysis: we show that the tq-protocol of normalization (defined by Danos, Joinet and Schellinx for the classical systems LKeta and polarized LKeta perfectly fits normalization of polarized proof-nets. In the last section, some more semantical considerations allow to recover LC as a refinement of multiplicative polarized LKeta.