Permission to access Riemann zeta zero DAT files via a lightweight proxy

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Pi Konsulting - Register

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May 31, 2026, 3:26:32 PMMay 31
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Dear LMFDB team,
My name is Patrik Idén, and I am an independent mathematical researcher based in Sweden. I am writing to ask for your permission — or to check whether it is already covered by your data policy — to access the Riemann zeta zero DAT files hosted at:

https://beta.lmfdb.org/riemann-zeta-zeros/data/

I have already downloaded the full dataset (all 14,580 DAT files) for local research purposes, and I have built a small web-based tool for exploring zero statistics:

https://pi-konsulting.se/science/tools/riemann/riemann-zero-finder-v3.html

The tool currently works with locally stored files. I would like to extend it to support on-demand lookup of individual zeros directly from your server, using the following approach:

- A lightweight PHP proxy on my server sends a single HTTP Range-request (typically ~50 KB) to your server for the specific byte range containing the requested zero, rather than downloading the full file (up to 95 MB).
- The proxy forwards the Cookie: human=1 header as required by your access system.
- This is a personal research tool with very limited traffic — not a high-volume or commercial application.

I want to make sure this usage is acceptable to you and does not place undue load on your infrastructure. I am happy to adjust the implementation (e.g. rate limiting, caching, or mirroring the files locally instead) based on your guidance.

I will of course cite LMFDB as the data source in any publications or public documentation.

And of course, if you want, you can link to this tool and use it yourself.

I am also happy to implement access control (e.g. password protection) on the tool if that would help manage traffic or limit usage to authorised users.

For transparency, I have also set up a small diagnostic page that demonstrates exactly how the proxy works in practice, including the Range-request behaviour and DAT format verification:

https://pi-konsulting.se/science/tools/riemann/test_lmfdb.php

Thank you for maintaining this invaluable resource.

Best regards,
Patrik Idén
Independent researcher

David W. Farmer

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May 31, 2026, 5:07:11 PMMay 31
to Pi Konsulting - Register, lmfdb-...@googlegroups.com

Is this accurate:

You already have the data, but you want to build a tool that helps
people hit our servers for that data?

And you want to give us credit for supplying that data through your
service, instead of you supplying that data and indicating that you
got the data from us?

Regards,

David
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