I guess either "Jestem twoją mamą" (I am your mom) or "To ja, (twoja) mama" - It's me, (your) mom).
Why is "mama" written with the curly "a" here? Is it a different case than nominative?
Bizarrely, https://en.wiktionary.org/wiki/by%C4%87 disagrees with this blanket rule of "być requiring instrumental". To summarize, być can apparently take a nominative if the object of być is well-defined. That suggests that "Jestem mama" might be correct in some circumstances. Jellei?
he already wrote about it here:
PART TWO AND A HALF: IF Y IS A NAME OR/AND A SURNAME
So sometimes in circumstances described by Podavus
And how do I say: "I am mom". [A mom striving for her son to recognize her].
Jestem Mama could be ok. (also "Dad jokes")
So, may I explore a little further? Jellei writes "Being "a doctor" kind of defines you, so it goes into Instrumental.", which I get, having already encountered "Dzień dobry. Jestem lekarzem". How about being "THE SPECIFIC doctor" whom, for example, I just called in an emergency, and has just arrived. Would that be a legitimate use for "Jestem lekarz"? Do the alternatives between Nom. and Inst. go some way to covering the gap left by not having specific definite and indefinite articles in Polish?
no there is no covering the gap. "jestem lekarz" sounds like a) somebody doesn't speek Polish good, or b) they have surname "Lekarz".
Mom works because it's used like a name.
"I am mom/mother" only works if you're giving "mom/mother" as the title by which you should be called. Otherwise, it needs the article.
The only situation where it could be used 'as a title' that I can imagine is something equivalent to "Call me: mom", so that's "Mów mi: mamo".
is it just me or does the audio sound like "Jestem a mamą"
it seems that polish speakers link words together, almost changing how you say them depending on what word you need to say next...
I wouldn't say that we do such a thing...
Well, you have two m's next to each other, so maybe what you hear is just the effect of saying those quite quickly while still having to separate them.