Pith Number

pith:YHCUVTAM

pith:2012:YHCUVTAMARJTMXAPK2NPIGDLRC

not attested not anchored not stored refs pending

Full Orientability of the Square of a Cycle

Fengwei Xu, Ko-Wei Lih, Weifan Wang

arxiv:1202.5721 v1 · 2012-02-26 · math.CO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{YHCUVTAMARJTMXAPK2NPIGDLRC}

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	2026-05-18T04:01:24.877379Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c1c54acc0c0453365c0f569af4186b88b3e04d232aa28d85faae936facf6505e

Aliases

arxiv: 1202.5721 · arxiv_version: 1202.5721v1 · doi: 10.48550/arxiv.1202.5721 · pith_short_12: YHCUVTAMARJT · pith_short_16: YHCUVTAMARJTMXAP · pith_short_8: YHCUVTAM

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/YHCUVTAMARJTMXAPK2NPIGDLRC \
  | 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: c1c54acc0c0453365c0f569af4186b88b3e04d232aa28d85faae936facf6505e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ec6f04622ea38ea2ab205e90e94050179e5319d553cbe35cb98df891fa925d82",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2012-02-26T03:23:38Z",
    "title_canon_sha256": "c5eeba8bee70c25bebe461610780dfcc607454c042b3a87d529d9d15c582b359"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1202.5721",
    "kind": "arxiv",
    "version": 1
  }
}