Pith Number

pith:F2RGEWC6

pith:2013:F2RGEWC6XYUHAXYMYUSMVNQZ3E

not attested not anchored not stored refs pending

Mapping spaces and R-completion

David Blanc, Debasis Sen

arxiv:1304.5928 v2 · 2013-04-22 · 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{F2RGEWC6XYUHAXYMYUSMVNQZ3E}

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	2026-05-18T03:02:21.089789Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2ea262585ebe28705f0cc524cab619d90e83bc2a87683c53b743920dace23fb6

Aliases

arxiv: 1304.5928 · arxiv_version: 1304.5928v2 · doi: 10.48550/arxiv.1304.5928 · pith_short_12: F2RGEWC6XYUH · pith_short_16: F2RGEWC6XYUHAXYM · pith_short_8: F2RGEWC6

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/F2RGEWC6XYUHAXYMYUSMVNQZ3E \
  | 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: 2ea262585ebe28705f0cc524cab619d90e83bc2a87683c53b743920dace23fb6

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b0acf7fd7be37d4da65949829f4b31e88ab0594ce5ebd3f7a9dd75a0ae77b3d7",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AT",
    "submitted_at": "2013-04-22T12:25:08Z",
    "title_canon_sha256": "99d43d2779f7423c7ecc792a94c09411f69ef877df47130f0ac2ebf9554d68e5"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1304.5928",
    "kind": "arxiv",
    "version": 2
  }
}