An unsolvable problem concerning implicational calculi.
Pahi, Biswambhar ; Applebee, Ralph C.
Notre Dame J. Formal Logic, Tome 11 (1970) no. 1, p. 200-202 / Harvested from Project Euclid
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Publié le : 1970-04-14
Classification:  02.75 
@article{1093893936,
     author = {Pahi, Biswambhar and Applebee, Ralph C.},
     title = {An unsolvable problem concerning implicational calculi.},
     journal = {Notre Dame J. Formal Logic},
     volume = {11},
     number = {1},
     year = {1970},
     pages = { 200-202},
     language = {en},
     url = {http://dml.mathdoc.fr/item/1093893936}
}

Pahi, Biswambhar; Applebee, Ralph C. An unsolvable problem concerning implicational calculi.. Notre Dame J. Formal Logic, Tome 11 (1970) no. 1, pp.  200-202. http://gdmltest.u-ga.fr/item/1093893936/