Pith Number

pith:D4DLEY5Z

pith:2011:D4DLEY5ZAU7FMV3HG6NC7SPXOH

not attested not anchored not stored refs pending

Fuzzy Topological Systems

Apostolos Syropoulos, Valeria de Paiva

arxiv:1107.2513 v1 · 2011-07-13 · cs.LO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{D4DLEY5ZAU7FMV3HG6NC7SPXOH}

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	2026-05-18T04:18:22.901638Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

1f06b263b9053e565767379a2fc9f771fdf9dc47de0861b3eca7386c09c44423

Aliases

arxiv: 1107.2513 · arxiv_version: 1107.2513v1 · doi: 10.48550/arxiv.1107.2513 · pith_short_12: D4DLEY5ZAU7F · pith_short_16: D4DLEY5ZAU7FMV3H · pith_short_8: D4DLEY5Z

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/D4DLEY5ZAU7FMV3HG6NC7SPXOH \
  | 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: 1f06b263b9053e565767379a2fc9f771fdf9dc47de0861b3eca7386c09c44423

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "88ddf909acb33bbf5a298575caac4e36ae34a752b3e491aae97b00aff009c759",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.LO",
    "submitted_at": "2011-07-13T10:25:14Z",
    "title_canon_sha256": "13fbc1290b1354fb12677b101838a3445880d079100eb2b7d02bbb52d0049fe5"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1107.2513",
    "kind": "arxiv",
    "version": 1
  }
}