Pith Number

pith:74W4GC5E

pith:2014:74W4GC5EBGNPTIEP5L2XWQW6B6

not attested not anchored not stored refs pending

Stability of closed characteristics on compact convex hypersurfaces in R^{2n}

Xijun Hu, Yuwei Ou

arxiv:1405.4057 v1 · 2014-05-16 · math.DS · 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{74W4GC5EBGNPTIEP5L2XWQW6B6}

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	2026-05-18T02:51:43.221357Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ff2dc30ba4099af9a08feaf57b42de0fa739ff22942dc4792bd643143126245e

Aliases

arxiv: 1405.4057 · arxiv_version: 1405.4057v1 · doi: 10.48550/arxiv.1405.4057 · pith_short_12: 74W4GC5EBGNP · pith_short_16: 74W4GC5EBGNPTIEP · pith_short_8: 74W4GC5E

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/74W4GC5EBGNPTIEP5L2XWQW6B6 \
  | 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: ff2dc30ba4099af9a08feaf57b42de0fa739ff22942dc4792bd643143126245e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c7067bd24e47ea657254cde7869009c0af41d5c596f4d7a2b0f76af41525e49d",
    "cross_cats_sorted": [
      "math.SG"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.DS",
    "submitted_at": "2014-05-16T03:26:22Z",
    "title_canon_sha256": "2cabd55806b087c8fa1576c261f1da12e50944f6e4720ca9ef52c7aa3c5f1735"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1405.4057",
    "kind": "arxiv",
    "version": 1
  }
}