Pith Number

pith:7HF7T453

pith:2001:7HF7T453TIDRMVFBQZ3FS4COPD

not attested not anchored not stored refs pending

Stable forms and special metrics

Nigel Hitchin

arxiv:math/0107101 v1 · 2001-07-13 · math.DG

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{7HF7T453TIDRMVFBQZ3FS4COPD}

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.

Cited by

1 paper in Pith

On the Plebanski Formulation with Energy Momentum

Receipt and verification

First computed	2026-07-04T14:35:26.006176Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f9cbf9f3bb9a071654a1867659704e78ecd3d0329d080983cea9e42472a5de88

Aliases

arxiv: math/0107101 · arxiv_version: math/0107101v1 · doi: 10.48550/arxiv.math/0107101 · pith_short_12: 7HF7T453TIDR · pith_short_16: 7HF7T453TIDRMVFB · pith_short_8: 7HF7T453

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/7HF7T453TIDRMVFBQZ3FS4COPD \
  | 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: f9cbf9f3bb9a071654a1867659704e78ecd3d0329d080983cea9e42472a5de88

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d7c11ba7929b5fa45e3c74b475ca42368ebe6fd9b66d74938aa1465ba0c7fcce",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "math.DG",
    "submitted_at": "2001-07-13T08:57:56Z",
    "title_canon_sha256": "d383b9a2a5d09f4cad62d8571e0654b45b43a76c934056f729bd03c549f1dba6"
  },
  "schema_version": "1.0",
  "source": {
    "id": "math/0107101",
    "kind": "arxiv",
    "version": 1
  }
}