Pith Number

pith:IZQ4IM3M

pith:2018:IZQ4IM3MQIHHADWTEJLC2KYKZX

not attested not anchored not stored refs pending

Approximation algorithms for the three-machine proportionate mixed shop scheduling

An Zhang, Bing Su, Guanqun Ni, Guohui Lin, Jianming Dong, Longcheng Liu, Randy Goebel, Yong Chen, Yue Luo

arxiv:1809.05745 v1 · 2018-09-15 · 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{IZQ4IM3MQIHHADWTEJLC2KYKZX}

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	2026-05-18T00:05:36.650329Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

4661c4336c820e700ed322562d2b0acddf7a5fb2e3961c2c648bf64570a8d96b

Aliases

arxiv: 1809.05745 · arxiv_version: 1809.05745v1 · doi: 10.48550/arxiv.1809.05745 · pith_short_12: IZQ4IM3MQIHH · pith_short_16: IZQ4IM3MQIHHADWT · pith_short_8: IZQ4IM3M

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/IZQ4IM3MQIHHADWTEJLC2KYKZX \
  | 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: 4661c4336c820e700ed322562d2b0acddf7a5fb2e3961c2c648bf64570a8d96b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "da4041532e57d2be3c584f5fcec6365ec516b78a67b61f110a70fa14d8f7f64a",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DS",
    "submitted_at": "2018-09-15T17:16:26Z",
    "title_canon_sha256": "a45183858f59168de216dccbe4adb2b044d9e4a8d4db556234f6c5ec4494be08"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1809.05745",
    "kind": "arxiv",
    "version": 1
  }
}