Pith Number

pith:QZNAAM6W

pith:2019:QZNAAM6W5QNW3SWB36Z46WTGZ7

not attested not anchored not stored refs pending

Nonsingular (Vertex-Weighted) Block Graphs

Abraham Berman, Cheng Zheng, Naomi Shaked-Monderer, Ranveer Singh

arxiv:1905.01921 v1 · 2019-05-06 · cs.DM · 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{QZNAAM6W5QNW3SWB36Z46WTGZ7}

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	2026-05-17T23:46:57.017434Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

865a0033d6ec1b6dcac1dfb3cf5a66cfeed53a9223b178191c3111b3ea530391

Aliases

arxiv: 1905.01921 · arxiv_version: 1905.01921v1 · doi: 10.48550/arxiv.1905.01921 · pith_short_12: QZNAAM6W5QNW · pith_short_16: QZNAAM6W5QNW3SWB · pith_short_8: QZNAAM6W

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/QZNAAM6W5QNW3SWB36Z46WTGZ7 \
  | 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: 865a0033d6ec1b6dcac1dfb3cf5a66cfeed53a9223b178191c3111b3ea530391

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d1e694838437448c9dc4695697b4d0c118ce64ae2e2f18d12aaebc11eadce8e1",
    "cross_cats_sorted": [
      "math.CO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DM",
    "submitted_at": "2019-05-06T10:51:34Z",
    "title_canon_sha256": "ebbeba0cc3ee79456681060fdb265c10673bab0b1cf14b58008b3308e1810a44"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1905.01921",
    "kind": "arxiv",
    "version": 1
  }
}