Pith Number

pith:NCTTADNN

pith:2019:NCTTADNNWMO5EHKB6YY5RBTQNY

not attested not anchored not stored refs pending

On the geometry of higher order Schreier spaces

Hung Viet Chu, Kevin Beanland, Leandro Antunes

arxiv:1903.03492 v1 · 2019-03-08 · 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{NCTTADNNWMO5EHKB6YY5RBTQNY}

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	2026-05-17T23:51:45.347233Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

68a7300dadb31dd21d41f631d886706e2895a8d708ab94175994885a695e17d5

Aliases

arxiv: 1903.03492 · arxiv_version: 1903.03492v1 · doi: 10.48550/arxiv.1903.03492 · pith_short_12: NCTTADNNWMO5 · pith_short_16: NCTTADNNWMO5EHKB · pith_short_8: NCTTADNN

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/NCTTADNNWMO5EHKB6YY5RBTQNY \
  | 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: 68a7300dadb31dd21d41f631d886706e2895a8d708ab94175994885a695e17d5

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "930e0e8859f08840cd3bce1c6620c61b9602a96700fd8877e28a95d1c989aedb",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.FA",
    "submitted_at": "2019-03-08T15:21:44Z",
    "title_canon_sha256": "bc777cc884914a11e67018e60e8a4121ccc603e6db28df78809b2800300a2605"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1903.03492",
    "kind": "arxiv",
    "version": 1
  }
}