Above is an article about a researcher disproving an open conjecture in algebra (Kaplansky's unit conjecture, which I was unfamiliar with). It says:
Gardam declined to tell the audience just how he had found the long-sought-after counterexample (except to confirm that it involved a computer search). He would share more details in a few months, he told Quanta. But for now, he said, “I’m still optimistic that maybe I have enough tricks left to get some more results.”
Is that a usual thing in math? I have seen some cryptography results announced that way, where someone demonstrates an attack on some cryptosystem but temporarily withholds details. The intention there is different though: it's to give people using the broken system some time to fix their stuff before revealing the attack to the wider world.
In the math case, I know something like this happened with solutions for cubic and quartic equations in the 16th(?) century but I had the impression that since then, if you've got a general method to solve a given type of problem, that's a bigger deal than cranking a few more specific solutions from it, so you might as well publish early.
Don't want to go too much into whether it's good or bad, but just wondering if anyone has seen stuff like this before.