Pith Number

pith:VRGEB554

pith:2016:VRGEB554TQ2NEXJRUDWTNUH3QI

not attested not anchored not stored refs pending

On the number of nonisomorphic subtrees of a tree

\'Eva Czabarka, L\'aszl\'o A. Sz\'ekely, Stephan Wagner

arxiv:1601.00944 v1 · 2016-01-05 · math.CO

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{VRGEB554TQ2NEXJRUDWTNUH3QI}

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	2026-05-18T01:23:21.242434Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ac4c40f7bc9c34d25d31a0ed36d0fb820d00ab0393a223014a587e42bfd85a8c

Aliases

arxiv: 1601.00944 · arxiv_version: 1601.00944v1 · doi: 10.48550/arxiv.1601.00944 · pith_short_12: VRGEB554TQ2N · pith_short_16: VRGEB554TQ2NEXJR · pith_short_8: VRGEB554

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/VRGEB554TQ2NEXJRUDWTNUH3QI \
  | 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: ac4c40f7bc9c34d25d31a0ed36d0fb820d00ab0393a223014a587e42bfd85a8c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f0a18bf5e101b9f4b184d1e5d22556c6b491a86e1816b6b8b1b01241b4cf7970",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.CO",
    "submitted_at": "2016-01-05T19:39:09Z",
    "title_canon_sha256": "0ccf8200483b02869a2a625455903d12a481f21fe07533557869d0731ac4b93e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1601.00944",
    "kind": "arxiv",
    "version": 1
  }
}