Pith Number

pith:QNXWVC5I

pith:2018:QNXWVC5IR4DZGUZNEV6E22G54U

not attested not anchored not stored refs pending

On the Local solvability of a class of degenerate second order operators with complex coefficients

Alberto Parmeggiani, Serena Federico

arxiv:1807.01040 v3 · 2018-07-03 · 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{QNXWVC5IR4DZGUZNEV6E22G54U}

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	2026-05-17T23:41:53.958948Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

836f6a8ba88f0793532d257c4d68dde509f19af6a63773e462c66da84e370b5e

Aliases

arxiv: 1807.01040 · arxiv_version: 1807.01040v3 · doi: 10.48550/arxiv.1807.01040 · pith_short_12: QNXWVC5IR4DZ · pith_short_16: QNXWVC5IR4DZGUZN · pith_short_8: QNXWVC5I

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/QNXWVC5IR4DZGUZNEV6E22G54U \
  | 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: 836f6a8ba88f0793532d257c4d68dde509f19af6a63773e462c66da84e370b5e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "93409875b24c3dbb85df2d06d830394a903571891855ebda94d41a9ed1524c7f",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AP",
    "submitted_at": "2018-07-03T09:28:35Z",
    "title_canon_sha256": "733d40966be0c6298913de9535cddae357b6bee6ba87395d48332f3ea7099788"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1807.01040",
    "kind": "arxiv",
    "version": 3
  }
}