A developer created a calculator implementing interval union arithmetic, which extends standard interval arithmetic to work over disjoint sets of intervals. Unlike regular arithmetic, it remains mathematically closed under all operations including division by intervals containing zero. The tool handles uncertainty quantification and produces correct interval results even with floating-point precision issues.
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Show HN: I made a calculator that works over disjoint sets of intervals
Developer built an interval arithmetic calculator using disjoint set union that remains mathematically closed under all operations—including division by intervals containing zero—eliminating a key limitation of traditional interval math.
Saturday, April 18, 2026 12:00 PM UTC2 MIN READSOURCE: Hacker NewsBY sys://pipeline
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