Pith Number

pith:EPXM5BVA

pith:2018:EPXM5BVAQFWKKLCVLX63JI652D

not attested not anchored not stored refs pending

Reconfiguration of Colorable Sets in Classes of Perfect Graphs

Takehiro Ito, Yota Otachi

arxiv:1802.06511 v1 · 2018-02-19 · cs.DS · 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{EPXM5BVAQFWKKLCVLX63JI652D}

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	2026-05-18T00:23:03.038379Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

23eece86a0816ca52c555dfdb4a3ddd0dc905d4daab7dc6a0c8b2b18a259e818

Aliases

arxiv: 1802.06511 · arxiv_version: 1802.06511v1 · doi: 10.48550/arxiv.1802.06511 · pith_short_12: EPXM5BVAQFWK · pith_short_16: EPXM5BVAQFWKKLCV · pith_short_8: EPXM5BVA

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/EPXM5BVAQFWKKLCVLX63JI652D \
  | 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: 23eece86a0816ca52c555dfdb4a3ddd0dc905d4daab7dc6a0c8b2b18a259e818

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "fe5ca40d66bcfe3ad64442509d7b870b03ca274e0e257c62d3db868a9eb82f4c",
    "cross_cats_sorted": [
      "cs.DM",
      "math.CO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DS",
    "submitted_at": "2018-02-19T03:37:32Z",
    "title_canon_sha256": "56b460d25fab5f1c8d5e494dd5250940d2fc333a62e2605874431936415e38a8"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1802.06511",
    "kind": "arxiv",
    "version": 1
  }
}