Pith Number

pith:RUL42F4C

pith:2022:RUL42F4CVK3C3AI6XJUZL6PIYQ

not attested not anchored not stored refs pending

Computing Galois groups of Fano problems

Thomas Yahl

arxiv:2209.07010 v2 · 2022-09-15 · math.AG

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{RUL42F4CVK3C3AI6XJUZL6PIYQ}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more · Embed verified badge

Record completeness

1 Bitcoin timestamp

2 Internet Archive

3 Author claim open · sign in to claim

4 Citations open

5 Replications open

✓ Portable graph bundle live · download bundle · merged state

The bundle contains the canonical record plus signed events. A mirror can host it anywhere and recompute the same current state with the deterministic merge algorithm.

Receipt and verification

First computed	2026-07-05T05:11:42.622561Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

8d17cd1782aab62d811eba6995f9e8c4079d7ff05a6b09a96707fc73cd75a13d

Aliases

arxiv: 2209.07010 · arxiv_version: 2209.07010v2 · doi: 10.48550/arxiv.2209.07010 · pith_short_12: RUL42F4CVK3C · pith_short_16: RUL42F4CVK3C3AI6 · pith_short_8: RUL42F4C

Agent API

Resolver JSON Graph JSON Events JSON Schema Signing key

Verify this Pith Number yourself

curl -sH 'Accept: application/ld+json' https://pith.science/pith/RUL42F4CVK3C3AI6XJUZL6PIYQ \
  | jq -c '.canonical_record' \
  | python3 -c "import sys,json,hashlib; b=json.dumps(json.loads(sys.stdin.read()), sort_keys=True, separators=(',',':'), ensure_ascii=False).encode(); print(hashlib.sha256(b).hexdigest())"
# expect: 8d17cd1782aab62d811eba6995f9e8c4079d7ff05a6b09a96707fc73cd75a13d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "845a1dc02d0776c2ae7c59c40ff4ee9de33f92d468a76f875dcabc76396e4a63",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/publicdomain/zero/1.0/",
    "primary_cat": "math.AG",
    "submitted_at": "2022-09-15T02:52:25Z",
    "title_canon_sha256": "e846af82aaf1a06414d6c29373ea1442192e114c9f78f4d275593651b92fe7d8"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2209.07010",
    "kind": "arxiv",
    "version": 2
  }
}