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The present work is intended to be an informal introduction to the theory of abstract logical groups. This particular formalization stems from some concepts of abstract algebra and the Johnson-Keynes’s theory of groups. Therefore the aim of this paper is that of provide the readers with the logical reasoning behind this brand new theory. I shall depict the philosophical notions as bases of the Keynes’s probability and then I shall explain it in terms of group. Furthermore we shall see, albeit roughly, a first definition of abstract groups.
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