Pith Number

pith:ZJ725ZAP

pith:2018:ZJ725ZAPMGM2CRP7YUXRF3EKOY

not attested not anchored not stored refs pending

Kernelization of Packing Problems

D\'aniel Marx, Holger Dell

arxiv:1812.03155 v1 · 2018-12-07 · cs.DS · cs.CC

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{ZJ725ZAPMGM2CRP7YUXRF3EKOY}

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	2026-05-17T23:58:50.790723Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ca7faee40f6199a145ffc52f12ec8a763c1c7b106e522c49889ce422d2701cf9

Aliases

arxiv: 1812.03155 · arxiv_version: 1812.03155v1 · doi: 10.48550/arxiv.1812.03155 · pith_short_12: ZJ725ZAPMGM2 · pith_short_16: ZJ725ZAPMGM2CRP7 · pith_short_8: ZJ725ZAP

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/ZJ725ZAPMGM2CRP7YUXRF3EKOY \
  | 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: ca7faee40f6199a145ffc52f12ec8a763c1c7b106e522c49889ce422d2701cf9

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f72339dbb85e1211e4b6e64c9aff791b684bbcf1b2bda0aebd30f968b93f7ad4",
    "cross_cats_sorted": [
      "cs.CC"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "cs.DS",
    "submitted_at": "2018-12-07T18:41:10Z",
    "title_canon_sha256": "0558fb9694df48d7983602e3aeb3e2ea5066418185b245bcf853c0fc4f6a16bf"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1812.03155",
    "kind": "arxiv",
    "version": 1
  }
}