Pith Number

pith:CQAH4DQF

pith:2012:CQAH4DQFDM2ZAUU7VMUX4FJI2H

not attested not anchored not stored refs pending

Solvability of nonlinear elliptic equations with gradient terms

Alexander Quaas, Boyan Sirakov, Patricio Felmer

arxiv:1208.6562 v1 · 2012-08-31 · 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{CQAH4DQFDM2ZAUU7VMUX4FJI2H}

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	2026-05-18T03:46:32.620192Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

14007e0e051b3590529fab297e1528d1c34efda54064f49030a98692ffd50730

Aliases

arxiv: 1208.6562 · arxiv_version: 1208.6562v1 · doi: 10.48550/arxiv.1208.6562 · pith_short_12: CQAH4DQFDM2Z · pith_short_16: CQAH4DQFDM2ZAUU7 · pith_short_8: CQAH4DQF

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/CQAH4DQFDM2ZAUU7VMUX4FJI2H \
  | 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: 14007e0e051b3590529fab297e1528d1c34efda54064f49030a98692ffd50730

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "85971af13a61f06595487cdf240cee7f54dbd59e4f84abc319950a1e86c859bc",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AP",
    "submitted_at": "2012-08-31T18:03:49Z",
    "title_canon_sha256": "8b957ccdbbdf7c208b69a8ce4331cc25cafe2bef69d1c61e645cc63e455a317e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1208.6562",
    "kind": "arxiv",
    "version": 1
  }
}