Pith Number

pith:XCFA3LNF

pith:2018:XCFA3LNFPK6GXTSM463ETRBYJD

not attested not anchored not stored refs pending

Improved Pseudo-Polynomial-Time Approximation for Strip Packing

Arindam Khan, Fabrizio Grandoni, Salvatore Ingala, Waldo G\'alvez

arxiv:1801.07541 v1 · 2018-01-23 · cs.DS · cs.CG

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{XCFA3LNFPK6GXTSM463ETRBYJD}

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	2026-05-18T00:25:12.617740Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b88a0dada57abc6bce4ce7b649c43848db93acb8228efaeb126872572a235f90

Aliases

arxiv: 1801.07541 · arxiv_version: 1801.07541v1 · doi: 10.48550/arxiv.1801.07541 · pith_short_12: XCFA3LNFPK6G · pith_short_16: XCFA3LNFPK6GXTSM · pith_short_8: XCFA3LNF

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/XCFA3LNFPK6GXTSM463ETRBYJD \
  | 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: b88a0dada57abc6bce4ce7b649c43848db93acb8228efaeb126872572a235f90

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "92132cb817a7ccb338af1ff26f4a97e7647c4475ea2900d3fea9aab1ee6a4962",
    "cross_cats_sorted": [
      "cs.CG"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DS",
    "submitted_at": "2018-01-23T14:03:48Z",
    "title_canon_sha256": "0aeb37a4b64ddcc764132a0c5977f6aaac9af07ef7f04e89d361cb5bddb695dc"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1801.07541",
    "kind": "arxiv",
    "version": 1
  }
}