Pith Number

pith:HCKFPCXR

pith:2017:HCKFPCXRQPN7GY2A3YJVWTDWML

not attested not anchored not stored refs pending

Improved Bounds for Drawing Trees on Fixed Points with L-shaped Edges

Anna Lubiw, Kshitij Jain, Martin Derka, Therese Biedl, Timothy M. Chan

arxiv:1709.01456 v1 · 2017-09-05 · cs.CG

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{HCKFPCXRQPN7GY2A3YJVWTDWML}

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	2026-05-18T00:36:00.041992Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

3894578af183dbf36340de135b4c7662d9902e99330201affca6a761c0d9037f

Aliases

arxiv: 1709.01456 · arxiv_version: 1709.01456v1 · doi: 10.48550/arxiv.1709.01456 · pith_short_12: HCKFPCXRQPN7 · pith_short_16: HCKFPCXRQPN7GY2A · pith_short_8: HCKFPCXR

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/HCKFPCXRQPN7GY2A3YJVWTDWML \
  | 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: 3894578af183dbf36340de135b4c7662d9902e99330201affca6a761c0d9037f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "7551c24d32bb38f010c079499c0e4104d3d3f5aa62307780677cdeda9319dfb4",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CG",
    "submitted_at": "2017-09-05T15:32:32Z",
    "title_canon_sha256": "722bd1761446da294571d3397066b467b9ea83e62dda1b4b76a0bf3ea35334ac"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1709.01456",
    "kind": "arxiv",
    "version": 1
  }
}