MHB Formal Proofs in Maths: Establishing Equivalence

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The discussion centers on establishing the equivalence of three mathematical statements related to inequalities. The statements include the basic inequality \(0 < 1\), the implication \(0 < A \Longrightarrow 0 < \frac{1}{A}\), and the condition \(AC < BC \wedge 0 < C \Longrightarrow A < B\). Participants express frustration over the lack of solutions provided in the referenced book, leading to the conclusion that this remains an unsolved challenge. The thread emphasizes the importance of formal proofs in mathematics for understanding these relationships. Overall, the discussion highlights a gap in resources for solving complex mathematical equivalences.
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From the book "FORMAL PROOFS IN MATHS "(Amazon.com),page 101 ,exercise19 ,Iread:

Establish the equivalence between:

$$0<1$$,.........$$0<A\Longrightarrow 0<\frac{1}{A}$$,............$$AC<BC\wedge 0<C\Longrightarrow A<B$$
 
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solakis said:
From the book "FORMAL PROOFS IN MATHS "(Amazon.com),page 101 ,exercise19 ,Iread:

Establish the equivalence between:

$$0<1$$,.........$$0<A\Longrightarrow 0<\frac{1}{A}$$,............$$AC<BC\wedge 0<C\Longrightarrow A<B$$

Please post the solution you have ready.
 
MarkFL said:
Please post the solution you have ready.

I am sorry but the book where i took that inequality does not give a solution, so let that be an unsolved challenge question
 
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