Pith Number

pith:YTCADJ4S

pith:2018:YTCADJ4SRSNWVBHDONNA36YRIQ

not attested not anchored not stored refs pending

Quasi-monotonicity formulas for classical obstacle problems with Sobolev coefficients and applications

Emanuele Spadaro, Francesco Geraci, Matteo Focardi

arxiv:1806.03179 v1 · 2018-06-08 · 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{YTCADJ4SRSNWVBHDONNA36YRIQ}

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	2026-05-18T00:13:49.396079Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c4c401a7928c9b6a84e3735a0dfb114436551b2fae0ac37603eafc4f62feac25

Aliases

arxiv: 1806.03179 · arxiv_version: 1806.03179v1 · doi: 10.48550/arxiv.1806.03179 · pith_short_12: YTCADJ4SRSNW · pith_short_16: YTCADJ4SRSNWVBHD · pith_short_8: YTCADJ4S

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/YTCADJ4SRSNWVBHDONNA36YRIQ \
  | 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: c4c401a7928c9b6a84e3735a0dfb114436551b2fae0ac37603eafc4f62feac25

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "147e470041fc0428232997852486a024b8f47ddf154baf2142a1f2b21080d4bd",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AP",
    "submitted_at": "2018-06-08T14:25:33Z",
    "title_canon_sha256": "928d60c81e9be3af44b04d75a3a5f4b84a1f9197193b4847ed5c201dca0faaca"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1806.03179",
    "kind": "arxiv",
    "version": 1
  }
}