Were there any Roman (not Greek-Roman, but Roman) mathematicians of note? Why not?

A mathematician friend of mine argued to me that Rome was a dark age when it came to math. He thought it was striking, and damning, that the relatively small Greek civilization produced so much math, but Rome did almost none.

My attempted responses to defend the honor of Rome:

Rome was big on delegation. They conquered the Greeks. If they needed math, they used Greeks. It's like they say at the end of the Aeneid—yours, Rome, is to rule.
They preserved a lot of Greek math, which would otherwise have been lost.
For all we know, the Romans did do a bunch of math, and medieval scholars and monks just failed to transcribe it.
Rome was great at applied math, e.g., engineering and accounting. So there was probably some pure math "underneath" that they just never bothered to really write down separately.

But I'm starting to wonder if it truly was a "dead period" for math. Maybe Rome just didn't consider pure mathematics of interest? In their defense, back in the day, it probably seemed more like weird numerological mysticism or obscure philosophy. Still, it does seem that the Greeks wildly outperformed them in this area.

And, to clarify—I'm not counting "applied mathematics". I'm well aware of the Roman genius for architecture and engineering, and my friend did concede those points.

This seems an old source, but here's an example of someone backing up my friend:

By the middle of the 1st Century BCE, the Roman had tightened their grip on the old Greek and Hellenistic empires, and the mathematical revolution of the Greeks ground to halt. Despite all their advances in other respects, no mathematical innovations occurred under the Roman Empire and Republic, and there were no mathematicians of note.

That's from "The Story of Mathematics".

From that site's perspective, it seems just about every other ancient/classical civilization had at least some significant mathematical progress. So why not Rome?

My classical history knowledge is limited, but I do recall the impression that Rome had a rather complicated relationship with the Greeks. I hesitate to advance such a poorly founded, intuition-based viewpoint here, but in the spirit of furthering the discussion, I'll say that my off-the-cuff, instinctive analysis would be that conservative elements in Roman society saw the Greeks (whose language they spoke in the Senate) as "soft", and a potential corrupting influence, compared to good old-fashioned farmer-statesman Romans and their practical mindset. So maybe the people who were best positioned to study math, i.e. the wealthy nobility, were also discouraged from being seen to take too much interest in the idle daydream-figures of a conquered people with mores and attitudes that conflicted with the practical Roman ideal.