Pith Number

pith:TDZXSA6K

pith:2016:TDZXSA6KHBCXZL2GOZCH2SEYJC

not attested not anchored not stored refs pending

Optimal Monotone Drawings of Trees

Dayu He, Xin He

arxiv:1604.03921 v1 · 2016-04-13 · 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{TDZXSA6KHBCXZL2GOZCH2SEYJC}

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	2026-05-18T01:17:10.643793Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

98f37903ca38457caf4676447d489848abb800e1bfd7d10f223979bc05674946

Aliases

arxiv: 1604.03921 · arxiv_version: 1604.03921v1 · doi: 10.48550/arxiv.1604.03921 · pith_short_12: TDZXSA6KHBCX · pith_short_16: TDZXSA6KHBCXZL2G · pith_short_8: TDZXSA6K

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/TDZXSA6KHBCXZL2GOZCH2SEYJC \
  | 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: 98f37903ca38457caf4676447d489848abb800e1bfd7d10f223979bc05674946

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c06340ec1d470c5bb646a2a55725c66430219bd3f4108b426a0a32c4fe7714d4",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DS",
    "submitted_at": "2016-04-13T19:21:17Z",
    "title_canon_sha256": "1734b3423fe9ae4f0b9f20dfddeeb971af8c8d0bf4ce77db13e423b91c020831"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1604.03921",
    "kind": "arxiv",
    "version": 1
  }
}