Pith Number

pith:JPQ7DTDG

pith:2018:JPQ7DTDGEWIX4WDT56BUAUQKB7

not attested not anchored not stored refs pending

Approximation algorithms for two-machine flow-shop scheduling with a conflict graph

An Zhang, Guangting Chen, Guohui Lin, Longcheng Liu, Randy Goebel, Yinhui Cai, Yong Chen

arxiv:1803.02862 v1 · 2018-03-07 · 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{JPQ7DTDGEWIX4WDT56BUAUQKB7}

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	2026-05-18T00:21:45.261431Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

4be1f1cc6625917e5873ef8340520a0fd2c1fbd91c9bc1df87c83340cb5ef89b

Aliases

arxiv: 1803.02862 · arxiv_version: 1803.02862v1 · doi: 10.48550/arxiv.1803.02862 · pith_short_12: JPQ7DTDGEWIX · pith_short_16: JPQ7DTDGEWIX4WDT · pith_short_8: JPQ7DTDG

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/JPQ7DTDGEWIX4WDT56BUAUQKB7 \
  | 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: 4be1f1cc6625917e5873ef8340520a0fd2c1fbd91c9bc1df87c83340cb5ef89b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ad15f7628a2b6a272d0f8b64fc7a079b2282586147d6e754f512251e63ddcae1",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DS",
    "submitted_at": "2018-03-07T20:12:47Z",
    "title_canon_sha256": "702ec56bdff9a4a8f293a0fb088a0d21d8394102482f381555ea0d4b004f587c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1803.02862",
    "kind": "arxiv",
    "version": 1
  }
}