Pith Number

pith:FIIXUWYX

pith:2017:FIIXUWYXLBX6XQCRRCB4BHHCSL

not attested not anchored not stored refs pending

Erratum to: Medial axis and singularities

Lev Birbrair, Maciej P. Denkowski

arxiv:1705.02788 v3 · 2017-05-08 · math.MG

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{FIIXUWYXLBX6XQCRRCB4BHHCSL}

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.

Cited by

2 papers in Pith

Directional curvature and medial axis

Sets Reconstructable with Medial Axis

Receipt and verification

First computed	2026-05-18T00:42:51.042818Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2a117a5b17586febc0518883c09ce292ef7c51426635dbb880245ff37022aade

Aliases

arxiv: 1705.02788 · arxiv_version: 1705.02788v3 · doi: 10.48550/arxiv.1705.02788 · pith_short_12: FIIXUWYXLBX6 · pith_short_16: FIIXUWYXLBX6XQCR · pith_short_8: FIIXUWYX

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/FIIXUWYXLBX6XQCRRCB4BHHCSL \
  | 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: 2a117a5b17586febc0518883c09ce292ef7c51426635dbb880245ff37022aade

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "24550d7c7664c60426c01b6a2329f09a50bce7d74ebb0632bf5176b8f3bbc424",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.MG",
    "submitted_at": "2017-05-08T09:08:07Z",
    "title_canon_sha256": "b115f1ae60244f9ca9daacf615f816db99e999df35bc7cccd614f33bc71b678f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1705.02788",
    "kind": "arxiv",
    "version": 3
  }
}