Pith Number

pith:63P5FK7Q

pith:2012:63P5FK7QA3IYXIUO2XB5S34ZE4

not attested not anchored not stored refs pending

C^{1,1} regularity for degenerate elliptic obstacle problems

Panagiota Daskalopoulos, Paul M. N. Feehan

arxiv:1206.0831 v5 · 2012-06-05 · math.AP · math.PR · q-fin.CP · q-fin.PR

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{63P5FK7QA3IYXIUO2XB5S34ZE4}

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	2026-05-18T01:17:33.744115Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f6dfd2abf006d18ba28ed5c3d96f992736994849704a37d05dc87498f77e0626

Aliases

arxiv: 1206.0831 · arxiv_version: 1206.0831v5 · doi: 10.48550/arxiv.1206.0831 · pith_short_12: 63P5FK7QA3IY · pith_short_16: 63P5FK7QA3IYXIUO · pith_short_8: 63P5FK7Q

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/63P5FK7QA3IYXIUO2XB5S34ZE4 \
  | 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: f6dfd2abf006d18ba28ed5c3d96f992736994849704a37d05dc87498f77e0626

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "3cd08e5f2e03d7795eeaae45028fa5d5f57eece49ec0eef7a6bf8efceae69068",
    "cross_cats_sorted": [
      "math.PR",
      "q-fin.CP",
      "q-fin.PR"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AP",
    "submitted_at": "2012-06-05T07:34:59Z",
    "title_canon_sha256": "cb289f5a6f7548fc4adccfe2c4a8b1cbc44271f71a77fe8b082940625414529f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1206.0831",
    "kind": "arxiv",
    "version": 5
  }
}