Pith Number

pith:DPO4TZSP

pith:2022:DPO4TZSPFLG343VEU6M3GESBWW

not attested not anchored not stored refs pending

Firefighting with a Distance-Based Restriction

Andrea Burgess, David Pike, John Marcoux

arxiv:2204.01908 v2 · 2022-04-05 · math.CO · cs.DM

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{DPO4TZSPFLG343VEU6M3GESBWW}

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	2026-07-05T08:50:22.888394Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

1bddc9e64f2acdbe6ea4a799b31241b5aa4d1df246a8a496667472740ddbcb67

Aliases

arxiv: 2204.01908 · arxiv_version: 2204.01908v2 · doi: 10.48550/arxiv.2204.01908 · pith_short_12: DPO4TZSPFLG3 · pith_short_16: DPO4TZSPFLG343VE · pith_short_8: DPO4TZSP

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/DPO4TZSPFLG343VEU6M3GESBWW \
  | 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: 1bddc9e64f2acdbe6ea4a799b31241b5aa4d1df246a8a496667472740ddbcb67

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "6def3ff0a41cde1a9477a55171425952aab49f0bb875dbf278d66d7134f0eef6",
    "cross_cats_sorted": [
      "cs.DM"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2022-04-05T00:34:27Z",
    "title_canon_sha256": "d5a6e252609ca0960f75e738bb4bedf3f45468cb1417c5c7eb24b56738410095"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2204.01908",
    "kind": "arxiv",
    "version": 2
  }
}