Pith Number

pith:DS5B2TB2

pith:2018:DS5B2TB2UABV2U36CREBDE253D

not attested not anchored not stored refs pending

Approximating the Incremental Knapsack Problem

Federico Della Croce, Rosario Scatamacchia, Ulrich Pferschy

arxiv:1801.04801 v1 · 2018-01-15 · 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{DS5B2TB2UABV2U36CREBDE253D}

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	2026-05-18T00:26:03.215571Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

1cba1d4c3aa0035d537e144811935dd8d2f77e451843fb174519f5a7ae5cbcfd

Aliases

arxiv: 1801.04801 · arxiv_version: 1801.04801v1 · doi: 10.48550/arxiv.1801.04801 · pith_short_12: DS5B2TB2UABV · pith_short_16: DS5B2TB2UABV2U36 · pith_short_8: DS5B2TB2

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/DS5B2TB2UABV2U36CREBDE253D \
  | 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: 1cba1d4c3aa0035d537e144811935dd8d2f77e451843fb174519f5a7ae5cbcfd

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "0ec594fd4cee99e5f872bcb372689117e0aa9787232618edbd94fe660e01751c",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DS",
    "submitted_at": "2018-01-15T13:53:27Z",
    "title_canon_sha256": "81b622e5d33c495f9cf433138ae7da5bf4096bc8ead0ed7da12842fbea866089"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1801.04801",
    "kind": "arxiv",
    "version": 1
  }
}