Pith Number

pith:ZEHLRMAB

pith:2013:ZEHLRMABM3IWSS7CJTLJJJUBFR

not attested not anchored not stored refs pending

On the optimality of approximation schemes for the classical scheduling problem

Guochuan Zhang, Klaus Jansen, Lin Chen

arxiv:1310.0398 v1 · 2013-10-01 · cs.CC · 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{ZEHLRMABM3IWSS7CJTLJJJUBFR}

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	2026-05-18T03:11:36.412003Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c90eb8b00166d1694be24cd694a6812c574695783342db968531372e4e306b6b

Aliases

arxiv: 1310.0398 · arxiv_version: 1310.0398v1 · doi: 10.48550/arxiv.1310.0398 · pith_short_12: ZEHLRMABM3IW · pith_short_16: ZEHLRMABM3IWSS7C · pith_short_8: ZEHLRMAB

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/ZEHLRMABM3IWSS7CJTLJJJUBFR \
  | 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: c90eb8b00166d1694be24cd694a6812c574695783342db968531372e4e306b6b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b77d6bdc082957180a874f8849b07d986f14b8562c6545e2cccf2adaa29138bd",
    "cross_cats_sorted": [
      "cs.DS"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CC",
    "submitted_at": "2013-10-01T17:25:57Z",
    "title_canon_sha256": "7511f070e9b19b14b9ab0febbb03e05bef3af93d02611faa1a771001124d436c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1310.0398",
    "kind": "arxiv",
    "version": 1
  }
}