Pith Number

pith:UFG3IJ6M

pith:2011:UFG3IJ6MLNIEZ44OFD2OUCD5AJ

not attested not anchored not stored refs pending

The interval ordering problem

Christoph D\"urr, Fabrice Talla Nobibon, Frits C.R. Spieksma, Gerhard J. Woeginger, Maurice Queyranne

arxiv:1112.0534 v1 · 2011-12-02 · 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{UFG3IJ6MLNIEZ44OFD2OUCD5AJ}

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	2026-05-18T04:07:07.096363Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a14db427cc5b504cf38e28f4ea087d024cb7fbb0269eeb30c7ca5e56fbd0f53b

Aliases

arxiv: 1112.0534 · arxiv_version: 1112.0534v1 · doi: 10.48550/arxiv.1112.0534 · pith_short_12: UFG3IJ6MLNIE · pith_short_16: UFG3IJ6MLNIEZ44O · pith_short_8: UFG3IJ6M

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/UFG3IJ6MLNIEZ44OFD2OUCD5AJ \
  | 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: a14db427cc5b504cf38e28f4ea087d024cb7fbb0269eeb30c7ca5e56fbd0f53b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "6b87cbc99fe59a06e22a7e59d47da652988a7b5202450dc6b729f738c292be61",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DS",
    "submitted_at": "2011-12-02T18:35:06Z",
    "title_canon_sha256": "97bef088c69701261faef61f64f119fa8240f995fd9863dc3484c1a0a367d08e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1112.0534",
    "kind": "arxiv",
    "version": 1
  }
}