Pith Number

pith:NSCBO27R

pith:2026:NSCBO27RCNXH6MRSW3PUYWBP5H

not attested not anchored not stored refs pending

The Presort Hierarchy for Geometric Problems

Eva Rotenberg, Ivor van der Hoog, Jack Spalding-Jamieson, Lasse Wulf

arxiv:2602.08843 v1 · 2026-02-09 · cs.CG · 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{NSCBO27RCNXH6MRSW3PUYWBP5H}

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	2026-05-20T00:00:34.069017Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6c84176bf1136e7f3232b6df4c582fe9dd5196a356fae4ee7ac983b17b2572da

Aliases

arxiv: 2602.08843 · arxiv_version: 2602.08843v1 · doi: 10.48550/arxiv.2602.08843 · pith_short_12: NSCBO27RCNXH · pith_short_16: NSCBO27RCNXH6MRS · pith_short_8: NSCBO27R

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/NSCBO27RCNXH6MRSW3PUYWBP5H \
  | 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: 6c84176bf1136e7f3232b6df4c582fe9dd5196a356fae4ee7ac983b17b2572da

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "705b1fc25f22e11ab621ee10d0139e4cddda60185281711b005388d9b818c29c",
    "cross_cats_sorted": [
      "cs.DS"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CG",
    "submitted_at": "2026-02-09T16:09:43Z",
    "title_canon_sha256": "34cf42554ec020e2a6f160e3aa5bb035e94dac7fb0e2f725575fc0c501b100ea"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2602.08843",
    "kind": "arxiv",
    "version": 1
  }
}