Pith Number

pith:NNGDHEGV

pith:2018:NNGDHEGVAEC2GY7WRH3JGFJF3Q

not attested not anchored not stored refs pending

KAM Theory. Part II. Kolmogorov spaces

Duco van Straten, Mauricio Garay

arxiv:1809.03492 v1 · 2018-09-09 · math.DS · math.FA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{NNGDHEGVAEC2GY7WRH3JGFJF3Q}

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	2026-05-18T00:06:00.606046Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6b4c3390d50105a363f689f6931525dc26a352c262da2476cd9f5ace7f6138d8

Aliases

arxiv: 1809.03492 · arxiv_version: 1809.03492v1 · doi: 10.48550/arxiv.1809.03492 · pith_short_12: NNGDHEGVAEC2 · pith_short_16: NNGDHEGVAEC2GY7W · pith_short_8: NNGDHEGV

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/NNGDHEGVAEC2GY7WRH3JGFJF3Q \
  | 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: 6b4c3390d50105a363f689f6931525dc26a352c262da2476cd9f5ace7f6138d8

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e40ec1f10aa1dabf935ec7c056e83a615a43ab2f22dc076c034fdc0624c8c723",
    "cross_cats_sorted": [
      "math.FA"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "math.DS",
    "submitted_at": "2018-09-09T09:44:29Z",
    "title_canon_sha256": "b82661cda3e301b3b27e29f938a35496040e6b707459f3583528128d7a97480f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1809.03492",
    "kind": "arxiv",
    "version": 1
  }
}