Pith Number

pith:27UIAHGU

pith:2012:27UIAHGUWEFNMUQLWPBCPW26AU

not attested not anchored not stored refs pending

Good reduction of three-point Galois covers

Andrew Obus

arxiv:1208.3909 v3 · 2012-08-20 · math.AG · math.NT

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{27UIAHGUWEFNMUQLWPBCPW26AU}

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	2026-05-18T00:33:28.101163Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d7e8801cd4b10ad6520bb3c227db5e0505150156731ded7e4c6ea8d39c81d72f

Aliases

arxiv: 1208.3909 · arxiv_version: 1208.3909v3 · doi: 10.48550/arxiv.1208.3909 · pith_short_12: 27UIAHGUWEFN · pith_short_16: 27UIAHGUWEFNMUQL · pith_short_8: 27UIAHGU

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/27UIAHGUWEFNMUQLWPBCPW26AU \
  | 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: d7e8801cd4b10ad6520bb3c227db5e0505150156731ded7e4c6ea8d39c81d72f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "207c3e04ee8f2ece6a30b03db6269ff21337b38c2dc3e722df7847290be16845",
    "cross_cats_sorted": [
      "math.NT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AG",
    "submitted_at": "2012-08-20T02:20:56Z",
    "title_canon_sha256": "2a5b8005d613e4780944d474a49979d65a09ab61f1858a0cfebc0c828a8055f7"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1208.3909",
    "kind": "arxiv",
    "version": 3
  }
}