Pith Number

pith:FXLX6Z5G

pith:2012:FXLX6Z5GCT5XXPF3RT3WRGNTKU

not attested not anchored not stored refs pending

On Einstein Matsumoto metrics

Xiaoling Zhang, Yi-Bing Shen

arxiv:1207.1937 v1 · 2012-07-09 · 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{FXLX6Z5GCT5XXPF3RT3WRGNTKU}

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	2026-05-18T03:51:26.566009Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2dd77f67a614fb7bbcbb8cf76899b3552b3b5c4798da38a05800b1f2e6c39d19

Aliases

arxiv: 1207.1937 · arxiv_version: 1207.1937v1 · doi: 10.48550/arxiv.1207.1937 · pith_short_12: FXLX6Z5GCT5X · pith_short_16: FXLX6Z5GCT5XXPF3 · pith_short_8: FXLX6Z5G

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/FXLX6Z5GCT5XXPF3RT3WRGNTKU \
  | 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: 2dd77f67a614fb7bbcbb8cf76899b3552b3b5c4798da38a05800b1f2e6c39d19

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c07771c58e4bc73a0bcc8fe07891be00f658f78483f6dfc88c36a125629a05a6",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.DG",
    "submitted_at": "2012-07-09T03:55:09Z",
    "title_canon_sha256": "cd42b84c9b70f7ac2fb5e3ad8066ba43a915bdd6feebf939c820e0a255f193d0"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1207.1937",
    "kind": "arxiv",
    "version": 1
  }
}