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"The n-adic first-order undefinability of the Geach formula."
Raymond E. Jennings, D. K. Johnston, Peter K. Schotch (1981)
- Raymond E. Jennings, D. K. Johnston, Peter K. Schotch:
The n-adic first-order undefinability of the Geach formula. Notre Dame J. Formal Log. 22(4): 375-378 (1981)
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