Pith Number

pith:AU3WESRK

pith:2013:AU3WESRKWPROGGPM2BSUEQIKNS

not attested not anchored not stored refs pending

On Maximum Differential Coloring of Planar Graphs

A. Das, M. Bekos, M. Geyer, M. Kaufmann, S. Kobourov, S. Veeramoni

arxiv:1302.7085 v3 · 2013-02-28 · 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{AU3WESRKWPROGGPM2BSUEQIKNS}

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	2026-05-18T02:49:54.153390Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

0537624a2ab3e2e319ecd06542410a6ca616638e627578f01942d842175d56d0

Aliases

arxiv: 1302.7085 · arxiv_version: 1302.7085v3 · doi: 10.48550/arxiv.1302.7085 · pith_short_12: AU3WESRKWPRO · pith_short_16: AU3WESRKWPROGGPM · pith_short_8: AU3WESRK

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/AU3WESRKWPROGGPM2BSUEQIKNS \
  | 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: 0537624a2ab3e2e319ecd06542410a6ca616638e627578f01942d842175d56d0

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "9a73ccea33370bacd2d6fd364e78debbe61f2b6e201667665b0b128faaa835e0",
    "cross_cats_sorted": [
      "math.CO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DM",
    "submitted_at": "2013-02-28T05:05:34Z",
    "title_canon_sha256": "5bf07aa53fb4427af24f8fe0c687ecc6be6e72272360f6c28fe8c0694e7a55da"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1302.7085",
    "kind": "arxiv",
    "version": 3
  }
}