An alternative form of apodeictic; clearly proved or necessarily true in a logical or mathematical sense.
From 'apodeictic' plus the suffix '-al,' used interchangeably with 'apodeictic' in formal philosophical and logical discourse.
Adding '-al' to 'apodeictic' doesn't really change the meaning—it's just a stylistic choice philosophers make, like how we can say 'historic' or 'historical' to mean roughly the same thing.
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