Pith Number

pith:BV7YPWE7

pith:2015:BV7YPWE7DWK5ZHA6E6SWGYTGV6

not attested not anchored not stored refs pending

'On the signless Laplacian spectra of $k$-trees'-- CORRIGENDUM

Minjie Zhang, Shuchao Li

arxiv:1507.02536 v2 · 2015-07-08 · 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{BV7YPWE7DWK5ZHA6E6SWGYTGV6}

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	2026-05-18T01:36:27.223954Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

0d7f87d89f1d95dc9c1e27a5636266af906dd0184559b31eb385362337e1769d

Aliases

arxiv: 1507.02536 · arxiv_version: 1507.02536v2 · doi: 10.48550/arxiv.1507.02536 · pith_short_12: BV7YPWE7DWK5 · pith_short_16: BV7YPWE7DWK5ZHA6 · pith_short_8: BV7YPWE7

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/BV7YPWE7DWK5ZHA6E6SWGYTGV6 \
  | 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: 0d7f87d89f1d95dc9c1e27a5636266af906dd0184559b31eb385362337e1769d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "9d304ab50898e49082614dd240ac113681d4556f4f1c8bd03b8e428ea3186416",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by-nc-sa/4.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2015-07-08T03:11:27Z",
    "title_canon_sha256": "6262b380997364efd65219024e7f89f14a28ab224070ffa112b04c152e8acb8b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1507.02536",
    "kind": "arxiv",
    "version": 2
  }
}