Pith Number

pith:OSS7YFLF

pith:2012:OSS7YFLFUK2CUVUBKQMVNYBDJM

not attested not anchored not stored refs pending

Natural maps between CAT(0) boundaries

Kurt Falk, Stephen M. Buckley

arxiv:1210.4812 v2 · 2012-10-17 · math.MG

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{OSS7YFLFUK2CUVUBKQMVNYBDJM}

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	2026-05-18T03:35:01.710256Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

74a5fc1565a2b42a5681541956e0234b118fe81f63c23b9da27c0c15ee29a102

Aliases

arxiv: 1210.4812 · arxiv_version: 1210.4812v2 · doi: 10.48550/arxiv.1210.4812 · pith_short_12: OSS7YFLFUK2C · pith_short_16: OSS7YFLFUK2CUVUB · pith_short_8: OSS7YFLF

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/OSS7YFLFUK2CUVUBKQMVNYBDJM \
  | 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: 74a5fc1565a2b42a5681541956e0234b118fe81f63c23b9da27c0c15ee29a102

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d09e7fc5f7836f1a70c3a429548bad72af07d898924e8055291b7a4b1de6ff63",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.MG",
    "submitted_at": "2012-10-17T18:17:53Z",
    "title_canon_sha256": "26a51a4869e12b0f76d4774ce299b3a3d0bf5908938ab29ec61767436fcb3b6c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1210.4812",
    "kind": "arxiv",
    "version": 2
  }
}