Pith Number

pith:KA6LHDK3

pith:2018:KA6LHDK3O2UX3NLN32XDRHMWBS

not attested not anchored not stored refs pending

$\mathcal{O}(k)$-robust spanners in one dimension

D\'aniel Ol\'ah, Kevin Buchin, Tim Hulshof

arxiv:1803.08719 v1 · 2018-03-23 · 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{KA6LHDK3O2UX3NLN32XDRHMWBS}

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	2026-05-18T00:20:18.715539Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

503cb38d5b76a97db56ddeae389d960c92d574281b84c7667d9fb01eae71f058

Aliases

arxiv: 1803.08719 · arxiv_version: 1803.08719v1 · doi: 10.48550/arxiv.1803.08719 · pith_short_12: KA6LHDK3O2UX · pith_short_16: KA6LHDK3O2UX3NLN · pith_short_8: KA6LHDK3

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/KA6LHDK3O2UX3NLN32XDRHMWBS \
  | 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: 503cb38d5b76a97db56ddeae389d960c92d574281b84c7667d9fb01eae71f058

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "3191155a6b4804a69a6fbcac12f5657395e71734e143112d7c032a19cde27b78",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CG",
    "submitted_at": "2018-03-23T10:30:51Z",
    "title_canon_sha256": "ca87e3b520601dcc7a1bdad352e7b7fc85e2954b9f6bcf7e000caf26d71eda51"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1803.08719",
    "kind": "arxiv",
    "version": 1
  }
}