Pith Number

pith:TNIVDQRR

pith:2014:TNIVDQRR23Z4RHQZAG3SNA4X5B

not attested not anchored not stored refs pending

On-line approach to off-line coloring problems on graphs with geometric representations

Bartosz Walczak, Tomasz Krawczyk

arxiv:1402.2437 v4 · 2014-02-11 · cs.DS · cs.CG · 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{TNIVDQRR23Z4RHQZAG3SNA4X5B}

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	2026-05-18T00:53:51.581524Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

9b5151c231d6f3c89e1901b7268397e8401cfbd8d2bbbef3027dee43fc4091e5

Aliases

arxiv: 1402.2437 · arxiv_version: 1402.2437v4 · doi: 10.48550/arxiv.1402.2437 · pith_short_12: TNIVDQRR23Z4 · pith_short_16: TNIVDQRR23Z4RHQZ · pith_short_8: TNIVDQRR

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/TNIVDQRR23Z4RHQZAG3SNA4X5B \
  | 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: 9b5151c231d6f3c89e1901b7268397e8401cfbd8d2bbbef3027dee43fc4091e5

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "3a9bb7a000b454caded28121e395e468fe3a7ce48e6745288e1116dacc89bcb7",
    "cross_cats_sorted": [
      "cs.CG",
      "cs.DM",
      "math.CO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DS",
    "submitted_at": "2014-02-11T10:50:08Z",
    "title_canon_sha256": "10449918085e8fa152451aaec69e279640a932352719d4426d9e196caad21bf8"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1402.2437",
    "kind": "arxiv",
    "version": 4
  }
}