Who it is for
Physicists, mathematicians and engineers who need more digits than a standard float carries.
AI Connectors · Education & Research
Precise Special Functions
Arbitrary-precision values for special mathematical functions
Overview
What Precise Special Functions does
This app computes named special functions to a requested number of digits. The set covers the Gamma function, the complete elliptic integrals K and E, the Riemann zeta function, the Gauss hypergeometric function 2F1, and Bessel functions of all four kinds (J, Y, I and K).
Arithmetic runs through mpmath, with precision available up to a thousand decimal places. That range is aimed at work where a double-precision float or a quick inline approximation falls short: physics simulation, number theory and engineering calculation.
Queries are written in ordinary language, for instance asking for the value of J0 at 7.2 to thirty digits. Results are deterministic and can be checked against reference implementations.
What stands out
Precision is settable up to a thousand decimal places, with results reproducible against reference implementations.
Availability
Where Precise Special Functions is listed
Precise Special Functions is listed in the ChatGPT apps directory only. Assaf Lanir has no connector under the same domain in the Claude directory; 392 of the 3,150 products here are on both marketplaces, and this is not one of them.
ChatGPT apps are built on MCP, and the same server can back a Claude connector, so the absence is a distribution decision rather than a technical one.
ChatGPT listing
In the ChatGPT apps directory
- Developer
- Assaf Lanir
- Filed under
- Education & Research
- Listed since
- July 2026
- Authentication
- Authenticates when installed
- Website
- bessel-eval-poc.fly.dev
- Policies published
- Privacy policy · Terms of service
- Official listing
- Open in ChatGPT
- Snapshot
- August 2026
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This is an independent catalogue entry compiled by Node8 from Precise Special Functions's public marketplace listing as it stood in August 2026. Listing facts come from the marketplaces; the comparisons against the rest of the directory and any live-endpoint measurements are Node8's. Node8 is not affiliated with Assaf Lanir, and inclusion here is not an endorsement.
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