Pith Number

pith:UFIWNRGT

pith:2014:UFIWNRGTKL4HXGPAPNYPORQ5IT

not attested not anchored not stored refs pending

On the topology of the spaces of curvature constrained plane curves

Jos\'e Ayala

arxiv:1404.4378 v2 · 2014-04-16 · math.GT

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{UFIWNRGTKL4HXGPAPNYPORQ5IT}

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	2026-05-18T00:37:37.123816Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a15166c4d352f87b99e07b70f7461d44caa89f36697e8604bc4688a54e7fa472

Aliases

arxiv: 1404.4378 · arxiv_version: 1404.4378v2 · doi: 10.48550/arxiv.1404.4378 · pith_short_12: UFIWNRGTKL4H · pith_short_16: UFIWNRGTKL4HXGPA · pith_short_8: UFIWNRGT

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/UFIWNRGTKL4HXGPAPNYPORQ5IT \
  | 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: a15166c4d352f87b99e07b70f7461d44caa89f36697e8604bc4688a54e7fa472

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "9701d564df60374e97c538b98f2a02feb01f88c670177f8fb7a9375a3edddfa6",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.GT",
    "submitted_at": "2014-04-16T20:24:15Z",
    "title_canon_sha256": "1e375c91e35e195bd54caf58f43a6dfb1867df39e249450263c5af35f8ed1ef5"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1404.4378",
    "kind": "arxiv",
    "version": 2
  }
}