Pith Number

pith:D5YSMGPR

pith:2013:D5YSMGPRJBHSGCIGTHZB5BHI6Y

not attested not anchored not stored refs pending

The extremal problems on the inertia of weighted bicyclic graphs

Feifei Song, Shibing Deng, Shuchao Li

arxiv:1311.3049 v1 · 2013-11-13 · 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{D5YSMGPRJBHSGCIGTHZB5BHI6Y}

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	2026-05-18T03:07:13.268339Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

1f712619f1484f23090699f21e84e8f63b3fadeb71bbed6d6cca92124415b2ac

Aliases

arxiv: 1311.3049 · arxiv_version: 1311.3049v1 · doi: 10.48550/arxiv.1311.3049 · pith_short_12: D5YSMGPRJBHS · pith_short_16: D5YSMGPRJBHSGCIG · pith_short_8: D5YSMGPR

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/D5YSMGPRJBHSGCIGTHZB5BHI6Y \
  | 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: 1f712619f1484f23090699f21e84e8f63b3fadeb71bbed6d6cca92124415b2ac

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "adf05b1df08c951694c2d16ebbc52ec0509b1e62c949d879f76ded7f1d423240",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by-nc-sa/3.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2013-11-13T08:27:44Z",
    "title_canon_sha256": "93d4405aa57256f811f77321c65746cfe6344ff1faeeff2c83410ea96e74b284"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1311.3049",
    "kind": "arxiv",
    "version": 1
  }
}