Pith Number

pith:YL7MLO3T

pith:2011:YL7MLO3TOVLQ3MDJX2EV3ZROBZ

not attested not anchored not stored refs pending

More Compact Oracles for Approximate Distances in Planar Graphs

Christian Sommer

arxiv:1109.2641 v2 · 2011-09-12 · 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{YL7MLO3TOVLQ3MDJX2EV3ZROBZ}

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	2026-05-18T04:09:55.972010Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c2fec5bb7375570db069be895de62e0e556274968448e1c5c56c844da5831141

Aliases

arxiv: 1109.2641 · arxiv_version: 1109.2641v2 · doi: 10.48550/arxiv.1109.2641 · pith_short_12: YL7MLO3TOVLQ · pith_short_16: YL7MLO3TOVLQ3MDJ · pith_short_8: YL7MLO3T

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/YL7MLO3TOVLQ3MDJX2EV3ZROBZ \
  | 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: c2fec5bb7375570db069be895de62e0e556274968448e1c5c56c844da5831141

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "31f61a4962ce64d6590317a79ff7d62322fa3fece2e6adce7a15a62fb59f10aa",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DS",
    "submitted_at": "2011-09-12T22:17:33Z",
    "title_canon_sha256": "9262a6d51c4e8aef5de5f15a332341bab9e2737fef3879e603f34e9f6cd7223e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1109.2641",
    "kind": "arxiv",
    "version": 2
  }
}