Pith Number

pith:DO3JX4NW

pith:2012:DO3JX4NWO6C7UUILPM6IIRZR2Z

not attested not anchored not stored refs pending

Improved Approximation Algorithms for the Non-preemptive Speed-scaling Problem

Evripidis Bampis, Giorgio Lucarelli, Ioannis Nemparis

arxiv:1209.6481 v2 · 2012-09-28 · 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{DO3JX4NWO6C7UUILPM6IIRZR2Z}

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	2026-05-18T03:40:13.797872Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

1bb69bf1b67785fa510b7b3c844731d6640786885d4f68f20e42e1962fd2e367

Aliases

arxiv: 1209.6481 · arxiv_version: 1209.6481v2 · doi: 10.48550/arxiv.1209.6481 · pith_short_12: DO3JX4NWO6C7 · pith_short_16: DO3JX4NWO6C7UUIL · pith_short_8: DO3JX4NW

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/DO3JX4NWO6C7UUILPM6IIRZR2Z \
  | 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: 1bb69bf1b67785fa510b7b3c844731d6640786885d4f68f20e42e1962fd2e367

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "0c8e9da46abb2bacbd88793ab8b7f556706979efa412baf0def94c34bb807af3",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DS",
    "submitted_at": "2012-09-28T11:13:59Z",
    "title_canon_sha256": "558ec04e4db875c9016480d3ddb0f57c0f666179e30e4188b29dadae63906b52"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1209.6481",
    "kind": "arxiv",
    "version": 2
  }
}