Pith Number

pith:T7UU5KAZ

pith:2012:T7UU5KAZJNTLZY7DS3ZCLGA7MH

not attested not anchored not stored refs pending

The Caffarelli Alternative in Measure for the Nondivergence Form Elliptic Obstacle Problem with Principal Coefficients in VMO

Ivan Blank, Kubrom Teka

arxiv:1207.5470 v2 · 2012-07-23 · 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{T7UU5KAZJNTLZY7DS3ZCLGA7MH}

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	2026-05-18T03:21:21.650339Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

9fe94ea8194b66bce3e396f225981f61f9c5cfa5579b68dda5cd6daf4adceeea

Aliases

arxiv: 1207.5470 · arxiv_version: 1207.5470v2 · doi: 10.48550/arxiv.1207.5470 · pith_short_12: T7UU5KAZJNTL · pith_short_16: T7UU5KAZJNTLZY7D · pith_short_8: T7UU5KAZ

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/T7UU5KAZJNTLZY7DS3ZCLGA7MH \
  | 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: 9fe94ea8194b66bce3e396f225981f61f9c5cfa5579b68dda5cd6daf4adceeea

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "07307207d658078fed5c3112a79df2382e6ce865b4717b9f64a1fc7f0b5aa9cd",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AP",
    "submitted_at": "2012-07-23T18:11:46Z",
    "title_canon_sha256": "98e86127b3a89d686c889c2501ff394c475988e0204af9d6ba3b72192c7edd7a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1207.5470",
    "kind": "arxiv",
    "version": 2
  }
}