I was wondering if someone can check this proof for me. And if you have any other methods of proving this please feel free to write them below.
Lemma 1: If $R$ over a set $A$ is a strict order then $R$ is irreflexive and transitive
Proof : Lets assume $R$ is a arbitary binary relation over the set $A$, is strict order. We need to prove $R$ is irreflexive and transitive.
Consequently we already know $R$ is a strict order relation. Therefore $R$ is irreflexive and transitive.
Lemma 2: If $R$ over a set $A$ is irreflexive and transitive then $R$ is strict order.
Proof: Lets assume $R$ is an arbitrary relation that is reflexive and transitive. We will prove that $R$ is strict order.
Consequently, we know $R$ is irreflexive and transitive. Therefore we will need to prove $R$ is asymmetric.
Let $a$ and $b$ be arbitrary elements where $aRb$ holds. We will prove that $bRa$ doesn't hold. Consider $c$ to be an element such that $c=a$. The relation $R$ is transitive we know that $aRb \cap bRc$ should result in a false to prove the asymmetry of $R$. We know that $R$ is irreflexive therefore $aRc$ is false.
Notice that $aRb \cap bRc \implies aRc$ is true therefore we can conclude that aRb is asymmetric.