Pith Number

pith:FGQI4OM2

pith:2011:FGQI4OM2F5MW72NMUJ6ACJD4W4

not attested not anchored not stored refs pending

The Complexity of Finding Multiple Solutions to Betweenness and Quartet Compatibility

Katherine St. John, Maria Luisa Bonet, Simone Linz

arxiv:1101.2170 v2 · 2011-01-11 · q-bio.PE · cs.CC · 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{FGQI4OM2F5MW72NMUJ6ACJD4W4}

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	2026-05-18T02:22:58.692937Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

29a08e399a2f596fe9aca27c01247cb739df16bd8881a4eb89da53361b6b710d

Aliases

arxiv: 1101.2170 · arxiv_version: 1101.2170v2 · doi: 10.48550/arxiv.1101.2170 · pith_short_12: FGQI4OM2F5MW · pith_short_16: FGQI4OM2F5MW72NM · pith_short_8: FGQI4OM2

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/FGQI4OM2F5MW72NMUJ6ACJD4W4 \
  | 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: 29a08e399a2f596fe9aca27c01247cb739df16bd8881a4eb89da53361b6b710d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "12c9a368e1654bcac441f5020054e240bedc72ccfa804170ac9a5e8f76a76d73",
    "cross_cats_sorted": [
      "cs.CC",
      "cs.DS"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "q-bio.PE",
    "submitted_at": "2011-01-11T17:48:54Z",
    "title_canon_sha256": "b5b8f3ceb7ea5272aa98ce1ba7b8c180950b633cafba5103b33dc054e849fdef"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1101.2170",
    "kind": "arxiv",
    "version": 2
  }
}