V. B. Šehtman. An undecidable superintuitionistic propositional calculus. Soviet mathematics, vol. 19 no. 3 (for 1978, pub. 1979), pp. 656–660. (English translation by B. F. Wells of Nérazréšimoé supérintuicionistskoé isčislénié vyskazyvanij, Doklady Akadémii Nauk SSSR, vol. 240(1978), pp. 549–552.) - S. V. Popov. Nondecidable intermediate calculus. Algebra and logic, vol. 20 (1982), pp. 424–461. (English translation of Nérazréšimoé proméžutočnoé isčislénié, Algébra i logika, vol. 20 (1981), pp. 654-706.)

Alasdair Urquhart

doi:10.2307/2274001

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V. B. Šehtman. An undecidable superintuitionistic propositional calculus. Soviet mathematics, vol. 19 no. 3 (for 1978, pub. 1979), pp. 656–660. (English translation by B. F. Wells of Nérazréšimoé supérintuicionistskoé isčislénié vyskazyvanij, Doklady Akadémii Nauk SSSR, vol. 240(1978), pp. 549–552.) - S. V. Popov. Nondecidable intermediate calculus. Algebra and logic, vol. 20 (1982), pp. 424–461. (English translation of Nérazréšimoé proméžutočnoé isčislénié, Algébra i logika, vol. 20 (1981), pp. 654-706.)

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V. B. Šehtman. An undecidable superintuitionistic propositional calculus. Soviet mathematics, vol. 19 no. 3 (for 1978, pub. 1979), pp. 656–660. (English translation by B. F. Wells of Nérazréšimoé supérintuicionistskoé isčislénié vyskazyvanij, Doklady Akadémii Nauk SSSR, vol. 240(1978), pp. 549–552.) - S. V. Popov. Nondecidable intermediate calculus. Algebra and logic, vol. 20 (1982), pp. 424–461. (English translation of Nérazréšimoé proméžutočnoé isčislénié, Algébra i logika, vol. 20 (1981), pp. 654-706.)

To save this article to your Google Drive account, please select one or more formats and confirm that you agree to abide by our usage policies. If this is the first time you used this feature, you will be asked to authorise Cambridge Core to connect with your Google Drive account. Find out more about saving content to Google Drive.

V. B. Šehtman. An undecidable superintuitionistic propositional calculus. Soviet mathematics, vol. 19 no. 3 (for 1978, pub. 1979), pp. 656–660. (English translation by B. F. Wells of Nérazréšimoé supérintuicionistskoé isčislénié vyskazyvanij, Doklady Akadémii Nauk SSSR, vol. 240(1978), pp. 549–552.) - S. V. Popov. Nondecidable intermediate calculus. Algebra and logic, vol. 20 (1982), pp. 424–461. (English translation of Nérazréšimoé proméžutočnoé isčislénié, Algébra i logika, vol. 20 (1981), pp. 654-706.)

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