Pith Number

pith:PEVHD7H7

pith:2018:PEVHD7H7RXRQLVLFAFRJZB5XWN

not attested not anchored not stored refs pending

Rigid linkages and partial zero forcing

Bryan Shader, Daniela Ferrero, H. Tracy Hall, Jephian C.-H. Lin, Leslie Hogben, Mary Flagg, Seth Meyer, Shahla Nasserasr

arxiv:1808.05553 v1 · 2018-08-16 · 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{PEVHD7H7RXRQLVLFAFRJZB5XWN}

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	2026-05-18T00:07:56.674992Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

792a71fcff8de305d56501629c87b7b34ec8b260f7f2dad9772d6a451d0997e0

Aliases

arxiv: 1808.05553 · arxiv_version: 1808.05553v1 · doi: 10.48550/arxiv.1808.05553 · pith_short_12: PEVHD7H7RXRQ · pith_short_16: PEVHD7H7RXRQLVLF · pith_short_8: PEVHD7H7

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/PEVHD7H7RXRQLVLFAFRJZB5XWN \
  | 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: 792a71fcff8de305d56501629c87b7b34ec8b260f7f2dad9772d6a451d0997e0

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a95b7619c547a65056d2abf2e1f9996278324578a572031426a34f0625c10d97",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2018-08-16T15:51:04Z",
    "title_canon_sha256": "c7db94e77c8540ad2d3f215d78d3e66154bac9b9885573a02bd54a7ea370d1c4"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1808.05553",
    "kind": "arxiv",
    "version": 1
  }
}