Pith Number

pith:4C4DQ5B4

pith:2014:4C4DQ5B4CAPVAQ4D7F5J2PIHVF

not attested not anchored not stored refs pending

A Note on NP-Hardness of Preemptive Mean Flow-Time Scheduling for Parallel Machines

Christoph D\"urr, Damien Prot, Marek Chrobak, Odile Bellenguez-Morineau

arxiv:1404.5424 v1 · 2014-04-22 · 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{4C4DQ5B4CAPVAQ4D7F5J2PIHVF}

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	2026-05-18T02:53:31.460211Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e0b838743c101f504383f97a9d3d07a94edcf787df1033156be7d1031307328b

Aliases

arxiv: 1404.5424 · arxiv_version: 1404.5424v1 · doi: 10.48550/arxiv.1404.5424 · pith_short_12: 4C4DQ5B4CAPV · pith_short_16: 4C4DQ5B4CAPVAQ4D · pith_short_8: 4C4DQ5B4

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/4C4DQ5B4CAPVAQ4D7F5J2PIHVF \
  | 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: e0b838743c101f504383f97a9d3d07a94edcf787df1033156be7d1031307328b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d967bef39e3962e485149a28b3eddb176bb04602d61dc4fb6aaca7440b75062f",
    "cross_cats_sorted": [
      "cs.DS"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CC",
    "submitted_at": "2014-04-22T08:54:20Z",
    "title_canon_sha256": "3f8286be1dca95054f6499b88d036652976c91f2159b7ed4bd21410fd5f47ca4"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1404.5424",
    "kind": "arxiv",
    "version": 1
  }
}