Pith Number

pith:SQMYL5ZG

pith:2015:SQMYL5ZGUHDT3ZKMWM3I33THGO

not attested not anchored not stored refs pending

Neighbourhoods of phylogenetic trees: exact and asymptotic counts

Jamie V. de Jong, Jeanette C McLeod, Mike Steel

arxiv:1508.03774 v1 · 2015-08-15 · q-bio.PE · 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{SQMYL5ZGUHDT3ZKMWM3I33THGO}

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	2026-05-18T01:09:11.905904Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

941985f726a1c73de54cb3368dee6733bd52424f47d99c50d5b8da041989d195

Aliases

arxiv: 1508.03774 · arxiv_version: 1508.03774v1 · doi: 10.48550/arxiv.1508.03774 · pith_short_12: SQMYL5ZGUHDT · pith_short_16: SQMYL5ZGUHDT3ZKM · pith_short_8: SQMYL5ZG

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/SQMYL5ZGUHDT3ZKMWM3I33THGO \
  | 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: 941985f726a1c73de54cb3368dee6733bd52424f47d99c50d5b8da041989d195

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1760a45424be1bb28a7b7f1759f2d776ead14059e037077def5e6fca82745ccf",
    "cross_cats_sorted": [
      "math.CO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "q-bio.PE",
    "submitted_at": "2015-08-15T22:24:33Z",
    "title_canon_sha256": "8c9a469a2a9ec81d951c4186bcde23bc5f68f257de456e5156ae28cd71a07dd1"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1508.03774",
    "kind": "arxiv",
    "version": 1
  }
}