Pith Number

pith:XH4U22UV

pith:2013:XH4U22UVLJS4WNF3JVVTL6FWCL

not attested not anchored not stored refs pending

Scheduling Meets Fixed-Parameter Tractability

Andreas Wiese, Matthias Mnich

arxiv:1311.4021 v1 · 2013-11-16 · 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{XH4U22UVLJS4WNF3JVVTL6FWCL}

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	2026-05-18T03:06:53.911405Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b9f94d6a955a65cb34bb4d6b35f8b612f7102425e8c9872d9991f1f175e47f62

Aliases

arxiv: 1311.4021 · arxiv_version: 1311.4021v1 · doi: 10.48550/arxiv.1311.4021 · pith_short_12: XH4U22UVLJS4 · pith_short_16: XH4U22UVLJS4WNF3 · pith_short_8: XH4U22UV

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/XH4U22UVLJS4WNF3JVVTL6FWCL \
  | 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: b9f94d6a955a65cb34bb4d6b35f8b612f7102425e8c9872d9991f1f175e47f62

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "52137b84fc353157e6d5a63f00d3911962f8c8a6394230623ff245a0ce377900",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DS",
    "submitted_at": "2013-11-16T05:50:21Z",
    "title_canon_sha256": "435049f8ed2f4825d9af766ac553c40224eee16fbc74e8b4988cf70e1c292ff1"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1311.4021",
    "kind": "arxiv",
    "version": 1
  }
}