Pith Number

pith:NMUMML3Z

pith:2018:NMUMML3ZC4D2GU7ESH4RKEOJIM

not attested not anchored not stored refs pending

An $O(n \log n)$ time Algorithm for computing the Path-length Distance between Trees

Celine Scornavacca, David Bryant

arxiv:1811.00619 v1 · 2018-11-01 · 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{NMUMML3ZC4D2GU7ESH4RKEOJIM}

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	2026-05-18T00:01:42.713094Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6b28c62f791707a353e491f91511c9430cfcc7199223a3961f2d0c8900766ae5

Aliases

arxiv: 1811.00619 · arxiv_version: 1811.00619v1 · doi: 10.48550/arxiv.1811.00619 · pith_short_12: NMUMML3ZC4D2 · pith_short_16: NMUMML3ZC4D2GU7E · pith_short_8: NMUMML3Z

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/NMUMML3ZC4D2GU7ESH4RKEOJIM \
  | 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: 6b28c62f791707a353e491f91511c9430cfcc7199223a3961f2d0c8900766ae5

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2cb46050978854de6ab96c83340892ff7532a17767d95b2acfa1a5a8f81e1514",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DS",
    "submitted_at": "2018-11-01T20:14:43Z",
    "title_canon_sha256": "f7e3c09658eb8b19506d3e9bbf4babad28db649711c2a2170683e8002e3bc5db"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1811.00619",
    "kind": "arxiv",
    "version": 1
  }
}