Pith Number

pith:XWUDA5E6

pith:2013:XWUDA5E6FQYIS6SBVSBVBGVLHX

not attested not anchored not stored refs pending

Cowen's class and Thomson's class

Hansong Huang, Kunyu Guo

arxiv:1312.7498 v2 · 2013-12-29 · math.CV

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{XWUDA5E6FQYIS6SBVSBVBGVLHX}

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	2026-05-18T03:02:20.038463Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

bda830749e2c30897a41ac83509aab3dee54288e8dc0ff78ad8e7123821d215f

Aliases

arxiv: 1312.7498 · arxiv_version: 1312.7498v2 · doi: 10.48550/arxiv.1312.7498 · pith_short_12: XWUDA5E6FQYI · pith_short_16: XWUDA5E6FQYIS6SB · pith_short_8: XWUDA5E6

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/XWUDA5E6FQYIS6SBVSBVBGVLHX \
  | 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: bda830749e2c30897a41ac83509aab3dee54288e8dc0ff78ad8e7123821d215f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c1d8401e68aae1536f3c67cd9182fb4c7a8a87112dab3f6e6e0f264b0c6824f5",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by-nc-sa/3.0/",
    "primary_cat": "math.CV",
    "submitted_at": "2013-12-29T04:00:59Z",
    "title_canon_sha256": "8c4852ab5f91c1ab1c45a399d91009f642fa317bd19584ad176a8e70c10c7f8e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1312.7498",
    "kind": "arxiv",
    "version": 2
  }
}