This is the 9772nd most frequent German word.
neuem
The German word "neuem" is the dative singular form of "neu" (new).
In this sentence, 'neuem' is the dative singular neuter form of 'neu,' modifying 'Thema' (topic). It is used because the preposition 'über' governs the dative case in this context.
Ich habe ein Buch über einem neuem Thema gelesen.
I read a book about a new topic.
Here, 'neuem' serves as the dative singular neuter form of 'neu,' describing 'Konzert' (concert), suitable because the context calls for a dative construction.
Wir begegneten uns bei einem neuem Konzert.
We met each other at a new concert.
In this example, 'neuem' is applied as the dative singular neuter form to describe 'Anfängen' (beginning), matching the case required by the preposition 'nach.'