Pith Number

pith:MEPOTZOF

pith:2014:MEPOTZOFNP2CHCYEVYVSMAX75S

not attested not anchored not stored refs pending

Fractional programming formulation for the vertex coloring problem

Atsushi Miyauchi, Noriyoshi Sukegawa, Tomomi Matsui

arxiv:1402.5769 v1 · 2014-02-24 · cs.DS

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{MEPOTZOFNP2CHCYEVYVSMAX75S}

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	2026-05-18T02:29:45.594029Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

611ee9e5c56bf4238b04ae2b2602ffeca18878ba4380488e3821676c44bd4929

Aliases

arxiv: 1402.5769 · arxiv_version: 1402.5769v1 · doi: 10.48550/arxiv.1402.5769 · pith_short_12: MEPOTZOFNP2C · pith_short_16: MEPOTZOFNP2CHCYE · pith_short_8: MEPOTZOF

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/MEPOTZOFNP2CHCYEVYVSMAX75S \
  | 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: 611ee9e5c56bf4238b04ae2b2602ffeca18878ba4380488e3821676c44bd4929

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "7e38834d45a5c7f94e3fb7f4ccd92cf7560f0882ae82b166ba7eaec1a9d52420",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DS",
    "submitted_at": "2014-02-24T10:01:07Z",
    "title_canon_sha256": "e1f44fc3738207e46835017f17a9125f5bad888c82892895c80f41d5d7d0045a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1402.5769",
    "kind": "arxiv",
    "version": 1
  }
}