Pith Number

pith:UPL64OMW

pith:2012:UPL64OMW3ODPDCIAJR7DMOEZQM

not attested not anchored not stored refs pending

Root location in random trees: A polarity property of all sampling consistent phylogenetic models except one

Mike Steel

arxiv:1203.5835 v1 · 2012-03-26 · q-bio.PE

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{UPL64OMW3ODPDCIAJR7DMOEZQM}

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	2026-05-18T03:59:13.307812Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a3d7ee3996db86f189004c7e36389983121bbed3418895f0623ddae8c480b6c8

Aliases

arxiv: 1203.5835 · arxiv_version: 1203.5835v1 · doi: 10.48550/arxiv.1203.5835 · pith_short_12: UPL64OMW3ODP · pith_short_16: UPL64OMW3ODPDCIA · pith_short_8: UPL64OMW

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/UPL64OMW3ODPDCIAJR7DMOEZQM \
  | 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: a3d7ee3996db86f189004c7e36389983121bbed3418895f0623ddae8c480b6c8

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1692591bdc4581ed2b58c4e1d5875fd114fb20e64b62fa233361a0efdfb07ef8",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "q-bio.PE",
    "submitted_at": "2012-03-26T22:48:57Z",
    "title_canon_sha256": "ce3b5b4de1caf5c9123772f353e6471bd159a1e366f1c0b41cd41072b3959ba5"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1203.5835",
    "kind": "arxiv",
    "version": 1
  }
}