Pith Number

pith:FLYRQLYP

pith:2010:FLYRQLYPNCQS5YR5Q4ITXPKR7Y

not attested not anchored not stored refs pending

Convexity of the smallest principal curvature of the convex level sets of some quasi-linear elliptic equations with respect to the height

Kun Huang, Wei Zhang

arxiv:1005.1515 v2 · 2010-05-10 · math.AP

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{FLYRQLYPNCQS5YR5Q4ITXPKR7Y}

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	2026-05-18T03:41:40.561019Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2af1182f0f68a12ee23d87113bbd51fe1ad19206f63a429bccc0b52ef6877526

Aliases

arxiv: 1005.1515 · arxiv_version: 1005.1515v2 · doi: 10.48550/arxiv.1005.1515 · pith_short_12: FLYRQLYPNCQS · pith_short_16: FLYRQLYPNCQS5YR5 · pith_short_8: FLYRQLYP

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/FLYRQLYPNCQS5YR5Q4ITXPKR7Y \
  | 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: 2af1182f0f68a12ee23d87113bbd51fe1ad19206f63a429bccc0b52ef6877526

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b7c726fded52b77369defb77c4fd27374325e0b5078b6f5f7c6e87e95227a438",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AP",
    "submitted_at": "2010-05-10T12:26:02Z",
    "title_canon_sha256": "b075fd943f7ce06a554d66db4c8f2dda722755e3bcf17432ccd418351c5443a7"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1005.1515",
    "kind": "arxiv",
    "version": 2
  }
}