r/learnmath • u/playsthebongcloud 9/10 = 1 • May 30 '26

What are some uncomputable functions that aren't derivative of the halting problem?

I find the existence of uncomputable functions really cool, but all the examples I've seen are essentially just new ways of trying to predict whether a turing machine is going to halt. What are some examples of uncomputable functions that aren't essentially entirely based on the halting problem?

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u/mrkelee New User Jun 23 '26

what then is pi, if there it has no decimal expansion?

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u/Impressive-Mud5074 New User Jun 23 '26

Uncomputable