Pith Number

pith:TQPWRAF4

pith:2013:TQPWRAF4OZN23BI7K5UGCGQ4XR

not attested not anchored not stored refs pending

Path coverings with prescribed ends in faulty hypercubes

Ivan S. Gotchev, Nelson Casta\~neda

arxiv:1312.1880 v1 · 2013-12-06 · 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{TQPWRAF4OZN23BI7K5UGCGQ4XR}

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	2026-05-18T03:05:19.546525Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

9c1f6880bc765bad851f5768611a1cbc58a24e98e1808daac6673948d7658191

Aliases

arxiv: 1312.1880 · arxiv_version: 1312.1880v1 · doi: 10.48550/arxiv.1312.1880 · pith_short_12: TQPWRAF4OZN2 · pith_short_16: TQPWRAF4OZN23BI7 · pith_short_8: TQPWRAF4

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/TQPWRAF4OZN23BI7K5UGCGQ4XR \
  | 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: 9c1f6880bc765bad851f5768611a1cbc58a24e98e1808daac6673948d7658191

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "25a48595a89a0c530a879a94a3fc046f7ba6da4c63fae35fc709953baa0c3de5",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2013-12-06T15:05:57Z",
    "title_canon_sha256": "3c4e852927fc8ac290937ade78f9c46c2120bed77b45151d616f493f65bf4306"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1312.1880",
    "kind": "arxiv",
    "version": 1
  }
}