Pith Number

pith:FB55QOVY

pith:2013:FB55QOVYFF4VJ75Q4NBFJPV6R4

not attested not anchored not stored refs pending

Complexity of the FIFO Stack-Up Problem

Egon Wanke, Frank Gurski, Jochen Rethmann

arxiv:1307.1915 v6 · 2013-07-07 · 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{FB55QOVYFF4VJ75Q4NBFJPV6R4}

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	2026-05-18T01:30:08.581821Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

287bd83ab8297954ffb0e34254bebe8f2409cf23eef710b3f25903bcf35c9585

Aliases

arxiv: 1307.1915 · arxiv_version: 1307.1915v6 · doi: 10.48550/arxiv.1307.1915 · pith_short_12: FB55QOVYFF4V · pith_short_16: FB55QOVYFF4VJ75Q · pith_short_8: FB55QOVY

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/FB55QOVYFF4VJ75Q4NBFJPV6R4 \
  | 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: 287bd83ab8297954ffb0e34254bebe8f2409cf23eef710b3f25903bcf35c9585

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2eec252b4aba310fe5b18a300dec32bd701d69bb6f524e41253331ebfa9ca0d5",
    "cross_cats_sorted": [
      "cs.CC"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DS",
    "submitted_at": "2013-07-07T21:02:11Z",
    "title_canon_sha256": "170e1e6b5b73d3139dbb54fd11daaaa6c69c64bdca37126089df60a6104f70ee"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1307.1915",
    "kind": "arxiv",
    "version": 6
  }
}