Pith Number

pith:FG3JLFEX

pith:2015:FG3JLFEXY3HE4BEW2RDNUBIOCM

not attested not anchored not stored refs pending

Spotting Trees with Few Leaves

Andreas Bj\"orklund, {\L}ukasz Kowalik, Meirav Zehavi, Vikram Kamat

arxiv:1501.00563 v2 · 2015-01-03 · 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{FG3JLFEXY3HE4BEW2RDNUBIOCM}

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	2026-05-18T02:26:38.416905Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

29b6959497c6ce4e0496d446da050e133369f4e76aae667109cd1a1d07bb4cb8

Aliases

arxiv: 1501.00563 · arxiv_version: 1501.00563v2 · doi: 10.48550/arxiv.1501.00563 · pith_short_12: FG3JLFEXY3HE · pith_short_16: FG3JLFEXY3HE4BEW · pith_short_8: FG3JLFEX

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/FG3JLFEXY3HE4BEW2RDNUBIOCM \
  | 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: 29b6959497c6ce4e0496d446da050e133369f4e76aae667109cd1a1d07bb4cb8

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "9bc8a12e4f5148fbb1bc7e9eae6138582d641b69a7a23f1a71381d392cd8a664",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DS",
    "submitted_at": "2015-01-03T13:19:12Z",
    "title_canon_sha256": "f1730b6a7c83c056f4351a0b9bc5ddf1063a6da7b62ffc8c03af24ba87c26321"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1501.00563",
    "kind": "arxiv",
    "version": 2
  }
}