Pith Number

pith:ZADTDHCK

pith:2017:ZADTDHCKWQDHX5TDZ6U7RKJ5B3

not attested not anchored not stored refs pending

Homotopy type of planar continua

Curtis Kent

arxiv:1709.09211 v1 · 2017-09-26 · math.AT

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{ZADTDHCKWQDHX5TDZ6U7RKJ5B3}

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	2026-05-18T00:34:12.509364Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c807319c4ab4067bf663cfa9f8a93d0ec67680bb6e843d08ac47e6957af57dc0

Aliases

arxiv: 1709.09211 · arxiv_version: 1709.09211v1 · doi: 10.48550/arxiv.1709.09211 · pith_short_12: ZADTDHCKWQDH · pith_short_16: ZADTDHCKWQDHX5TD · pith_short_8: ZADTDHCK

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/ZADTDHCKWQDHX5TDZ6U7RKJ5B3 \
  | 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: c807319c4ab4067bf663cfa9f8a93d0ec67680bb6e843d08ac47e6957af57dc0

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d0d830710dfe93b81b789545ab87a67287c41c0c798380bba9ed9633a0e21a76",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AT",
    "submitted_at": "2017-09-26T18:27:11Z",
    "title_canon_sha256": "7678cd5657906377a823fa0469f14510123040e17cec94b5e0bd39068c7f259d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1709.09211",
    "kind": "arxiv",
    "version": 1
  }
}