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math.HO2026
Hankel's principle as an anti-Kantian program
Iulian D. Toader
Hankel used his principle of the permanence of formal laws (PFL) as a guide for the extension of number systems and as a necessary condition for the legitimacy of their formal theo…
math.HO2026★ 1 cited
Peacock's Principle as a Conservative Strategy
Iulian D. Toader
The view that Peacock's principle of permanence has been invalidated by Hamilton's introduction of non-commutative algebras has always seemed rather odd, in light of Peacock's favo…