Pith Number

pith:4IKWHXK2

pith:2012:4IKWHXK2WWI4R5RV5Q6QOOBD2H

not attested not anchored not stored refs pending

A Polynomial Time Approximation Scheme for a Single Machine Scheduling Problem Using a Hybrid Evolutionary Algorithm

Boris Mitavskiy, Jun He

arxiv:1202.1708 v2 · 2012-02-08 · cs.NE

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{4IKWHXK2WWI4R5RV5Q6QOOBD2H}

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	2026-05-18T02:53:41.865357Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e21563dd5ab591c8f635ec3d073823d1e325c029501c2ee84997720f03af240f

Aliases

arxiv: 1202.1708 · arxiv_version: 1202.1708v2 · doi: 10.48550/arxiv.1202.1708 · pith_short_12: 4IKWHXK2WWI4 · pith_short_16: 4IKWHXK2WWI4R5RV · pith_short_8: 4IKWHXK2

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/4IKWHXK2WWI4R5RV5Q6QOOBD2H \
  | 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: e21563dd5ab591c8f635ec3d073823d1e325c029501c2ee84997720f03af240f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "571dfd0a42a8f4a6b31913b9f3078de25896738fbcfed6e685ed6345a63286a3",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.NE",
    "submitted_at": "2012-02-08T14:30:55Z",
    "title_canon_sha256": "d398c6b7fb818a5670f00383f95ae2e6d6305724f5c1e8f44d5f07bcde0fdd80"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1202.1708",
    "kind": "arxiv",
    "version": 2
  }
}