Two new propositions about funcoids and reloids

I proved the following equality for \mathcal{A} being a filter object and f being either a funcoid: \mathrm{dom}f|^{\mathsf{FCD}}_{\mathcal{A}} = \mathcal{A} \cap^{\mathfrak{F}} \mathrm{dom}f or reloid: \mathrm{dom}f|^{\mathsf{RLD}}_{\mathcal{A}} = \mathcal{A} \cap^{\mathfrak{F}} \mathrm{dom}f.

See the updated version of Funcoids and Reloids online article.

The proofs are short but they may be not as obvious at it seems.

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