Pith Number

pith:QDX375P4

pith:2014:QDX375P4FGJGNGVUE22PWGNICG

not attested not anchored not stored refs pending

Regularity of powers of forests and cycles

Huy Tai Ha, Selvi Kara, Tran Nam Trung

arxiv:1409.0277 v2 · 2014-09-01 · math.AC · 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{QDX375P4FGJGNGVUE22PWGNICG}

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	2026-07-05T05:01:58.216096Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

80efbff5fc2992669ab426b4fb19a8118c39d1a126bac68013414ab6d0d73cf6

Aliases

arxiv: 1409.0277 · arxiv_version: 1409.0277v2 · doi: 10.48550/arxiv.1409.0277 · pith_short_12: QDX375P4FGJG · pith_short_16: QDX375P4FGJGNGVU · pith_short_8: QDX375P4

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/QDX375P4FGJGNGVUE22PWGNICG \
  | 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: 80efbff5fc2992669ab426b4fb19a8118c39d1a126bac68013414ab6d0d73cf6

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "9d644e5b37b6fa22a0b1e056611574d8721afedb47ccbfa64ddcd25786b70db4",
    "cross_cats_sorted": [
      "math.CO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AC",
    "submitted_at": "2014-09-01T01:23:01Z",
    "title_canon_sha256": "0b5ab56bdea183147c9a1c39255aadad91697cf8890ff1faa5906db79e1b1bf6"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1409.0277",
    "kind": "arxiv",
    "version": 2
  }
}