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→‎Double negation theorem: ← split off new section
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By way of gaining a minimal experience with how equational proofs look in the present forms of syntax, I will lay out the proofs of a few essential theorems in the primary algebra.
 
By way of gaining a minimal experience with how equational proofs look in the present forms of syntax, I will lay out the proofs of a few essential theorems in the primary algebra.
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==Double negation theorem==
    
The first theorem goes under the names of ''Consequence&nbsp;1'' <math>(C_1)\!</math>, the ''double negation theorem'' (DNT), or ''Reflection''.
 
The first theorem goes under the names of ''Consequence&nbsp;1'' <math>(C_1)\!</math>, the ''double negation theorem'' (DNT), or ''Reflection''.
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