So far most logicians featured have been those who have given results on the more classical side (broadly speaking), so I would vote for logicians who have worked more on the nonclassical side, such as Jan Łukasiewicz (many-valued), Arthur Prior (modal), and Brouwer and Heyting (intuitionist).
If you were to include living logicians, then of course the list of logicians could be extended much further! There’s Nuel Belnap, Graham Priest, Karel Lambert, Johan van Benthem, David Makinson, Dag Prawitz, and so many more…
And on the other hand, I would also vote to have a few pictures of logicians from a bit further back: maybe Aristotle, Chrysippus, and William of Ockham?
I’d like to add Michael Dummett to the nominations for non-classical logicians.
chris
Kripke, surely, for those living.
mariia7
I vote in Dr. Newton Carneiro Affonso da Costa a non-classical logician. He is one of the founders of the paraconsistent logic! Also he constructed the theory of quasi-truth that constitutes a generalization of Alfred Tarski’s theory of truth, and applied it to the foundations of science.
Samuel T. X. Khoo
So far most logicians featured have been those who have given results on the more classical side (broadly speaking), so I would vote for logicians who have worked more on the nonclassical side, such as Jan Łukasiewicz (many-valued), Arthur Prior (modal), and Brouwer and Heyting (intuitionist).
If you were to include living logicians, then of course the list of logicians could be extended much further! There’s Nuel Belnap, Graham Priest, Karel Lambert, Johan van Benthem, David Makinson, Dag Prawitz, and so many more…
And on the other hand, I would also vote to have a few pictures of logicians from a bit further back: maybe Aristotle, Chrysippus, and William of Ockham?
Richard Zach
You can vote as often as you like!
Nathan Kellen
I’d like to add Michael Dummett to the nominations for non-classical logicians.
chris
Kripke, surely, for those living.
mariia7
I vote in Dr. Newton Carneiro Affonso da Costa a non-classical logician. He is one of the founders of the paraconsistent logic! Also he constructed the theory of quasi-truth that constitutes a generalization of Alfred Tarski’s theory of truth, and applied it to the foundations of science.
Walter Carnielli
Newton Carneiro Affonso da Costa is an important name missing in the list.
Vera Godoy
I would like to vote for Walter Cárnielli. He is one of the best non-anglophone authorities in Logic
Leonor Santos
Newton Carneiro Affonso da Costa, for sure.
vcvpaiva
William Craig and Helena Rasiowa. Sol Feferman, Bill Tait, Dag Prawitz and Per Martin-Loef.
itala Maria Loffredo D'Ottaviano
Newton Carneiro Affonso da Costa is one of the most creative non-classical (living) logicians.
Souvik Das
Charles Sanders Pierce should be there in the list.