Pith Number

pith:UOGO7L2U

pith:2014:UOGO7L2UY47GXHCFW32NALDO7G

not attested not anchored not stored refs pending

The Maximum k-Differential Coloring Problem

Michael Bekos, Michael Kaufmann, Sankar Veeramoni, Stephen Kobourov

arxiv:1409.8133 v2 · 2014-09-29 · 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{UOGO7L2UY47GXHCFW32NALDO7G}

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	2026-05-18T02:41:16.587714Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a38cefaf54c73e6b9c45b6f4d02c6ef997e14ec7a3a0105135d6317496783e2e

Aliases

arxiv: 1409.8133 · arxiv_version: 1409.8133v2 · doi: 10.48550/arxiv.1409.8133 · pith_short_12: UOGO7L2UY47G · pith_short_16: UOGO7L2UY47GXHCF · pith_short_8: UOGO7L2U

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/UOGO7L2UY47GXHCFW32NALDO7G \
  | 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: a38cefaf54c73e6b9c45b6f4d02c6ef997e14ec7a3a0105135d6317496783e2e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "40243d21cb47ff93ae7894b563bfd868b3bf186691c6024726e7961e93415357",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DM",
    "submitted_at": "2014-09-29T14:29:31Z",
    "title_canon_sha256": "2b3cff189214dcd10b0875f38a9729a676da39b185d8a70e0c3ecdabe141b712"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1409.8133",
    "kind": "arxiv",
    "version": 2
  }
}