A name for a magic academic journal

[NNescio]

Ah yes, missed a syllable and it all comes apart . I'm just glancing at the Wiktionary declension tables--almost used the dative, too, looking at the wrong line.

Come to think of it, I always thought Latin was a bit odd for using the accusative after "to/for" prepositions. Some languages use the dative.

Would this also mean "Magic is Arcane Geometry"?

Yes, it would. More intuitive to read it that way as well. (Since "arcane magic" is kinda tautological except for D&D settings that distinguish between arcane and divine magic.)