Pith Number

pith:U7A63PUR

pith:2004:U7A63PUR5F6KYMMDEB2AYOKDDS

not attested not anchored not stored refs pending

Upper semi-continuity of the Royden-Kobayashi pseudo-norm, a counterexample for H\"olderian almost complex structures

Jean-Pierre Rosay, Sergey Ivashkovich, Sergey Pinchuk

arxiv:math/0402331 v1 · 2004-02-20 · math.CV · 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{U7A63PUR5F6KYMMDEB2AYOKDDS}

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	2026-05-18T01:38:28.545616Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a7c1edbe91e97cac318320740c39431cafef2949b4d7943de6938b4b4e137f6f

Aliases

arxiv: math/0402331 · arxiv_version: math/0402331v1 · doi: 10.48550/arxiv.math/0402331 · pith_short_12: U7A63PUR5F6K · pith_short_16: U7A63PUR5F6KYMMD · pith_short_8: U7A63PUR

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/U7A63PUR5F6KYMMDEB2AYOKDDS \
  | 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: a7c1edbe91e97cac318320740c39431cafef2949b4d7943de6938b4b4e137f6f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "de6648156702d5038d1db0fa0b963837fe9310a8ad5821a5724649e741bf980f",
    "cross_cats_sorted": [
      "math.SG"
    ],
    "license": "",
    "primary_cat": "math.CV",
    "submitted_at": "2004-02-20T08:12:41Z",
    "title_canon_sha256": "58b5862cc5b9fa533e919ea5a305e9548ec667116344018881cb425f06fb4a26"
  },
  "schema_version": "1.0",
  "source": {
    "id": "math/0402331",
    "kind": "arxiv",
    "version": 1
  }
}