Pith Number

pith:NMYCZJOR

pith:2019:NMYCZJOR7PUWPAW4ALIBK4LOWX

not attested not anchored not stored refs pending

On topological properties of positive complexity one spaces

Daniele Sepe, Silvia Sabatini

arxiv:1905.13041 v1 · 2019-05-30 · math.SG

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{NMYCZJOR7PUWPAW4ALIBK4LOWX}

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	2026-05-17T23:44:39.073518Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6b302ca5d1fbe96782dc02d015716eb5db847a76f4e42e137b975e229072b071

Aliases

arxiv: 1905.13041 · arxiv_version: 1905.13041v1 · doi: 10.48550/arxiv.1905.13041 · pith_short_12: NMYCZJOR7PUW · pith_short_16: NMYCZJOR7PUWPAW4 · pith_short_8: NMYCZJOR

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/NMYCZJOR7PUWPAW4ALIBK4LOWX \
  | 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: 6b302ca5d1fbe96782dc02d015716eb5db847a76f4e42e137b975e229072b071

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "8c00996e32d64a2d2456c01b69dcf233be4ed939692e74d8f559bf0792c18308",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.SG",
    "submitted_at": "2019-05-30T13:22:40Z",
    "title_canon_sha256": "a36f3086d066490e2cda661abfb080ea3ef6a1c06d43f312eb4504785836dfa8"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1905.13041",
    "kind": "arxiv",
    "version": 1
  }
}