Pith Number

pith:WCGF4JCA

pith:2002:WCGF4JCAWGSQJYOTEPWDA2AXHR

not attested not anchored not stored refs pending

The fundamental group of a Galois cover of CP^1 X T

David Goldberg, Meirav Amram, Mina Teicher, Uzi Vishne

arxiv:math/0205272 v1 · 2002-05-26 · math.AG · math.AT

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{WCGF4JCAWGSQJYOTEPWDA2AXHR}

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	2026-05-18T02:41:33.021478Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b08c5e2440b1a504e1d323ec3068173c453432da0b57cb7a2da7c0f4058b9519

Aliases

arxiv: math/0205272 · arxiv_version: math/0205272v1 · doi: 10.48550/arxiv.math/0205272 · pith_short_12: WCGF4JCAWGSQ · pith_short_16: WCGF4JCAWGSQJYOT · pith_short_8: WCGF4JCA

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/WCGF4JCAWGSQJYOTEPWDA2AXHR \
  | 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: b08c5e2440b1a504e1d323ec3068173c453432da0b57cb7a2da7c0f4058b9519

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "027cc3692d58cf1110d7f299f7c9965c32ae33bc632809a0d785ea7688d94d60",
    "cross_cats_sorted": [
      "math.AT"
    ],
    "license": "",
    "primary_cat": "math.AG",
    "submitted_at": "2002-05-26T13:03:44Z",
    "title_canon_sha256": "66fe238b9f5cdb46fb09fcaaab881a56f0d94f2bfdabee6eec2f2066d111a341"
  },
  "schema_version": "1.0",
  "source": {
    "id": "math/0205272",
    "kind": "arxiv",
    "version": 1
  }
}