Pith Number

pith:AS4RQMV6

pith:2018:AS4RQMV63EEGM2VIYEXHIJV6WI

not attested not anchored not stored refs pending

Obstacle problems for nonlocal operators: A brief overview

Arshak Petrosyan, Camelia A. Pop, Donatella Danielli

arxiv:1807.10910 v1 · 2018-07-28 · 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{AS4RQMV63EEGM2VIYEXHIJV6WI}

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	2026-05-18T00:09:35.037557Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

04b91832bed908666aa8c12e7426beb223ac4cb0f717b26565af83b3e6bb4524

Aliases

arxiv: 1807.10910 · arxiv_version: 1807.10910v1 · doi: 10.48550/arxiv.1807.10910 · pith_short_12: AS4RQMV63EEG · pith_short_16: AS4RQMV63EEGM2VI · pith_short_8: AS4RQMV6

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/AS4RQMV63EEGM2VIYEXHIJV6WI \
  | 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: 04b91832bed908666aa8c12e7426beb223ac4cb0f717b26565af83b3e6bb4524

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "613482beb54dcf2e553d7da71b6cf9729afc7a64a76b60954854c466938674c8",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AP",
    "submitted_at": "2018-07-28T08:19:39Z",
    "title_canon_sha256": "9519003fa11964de1a0b7493baad8e653e9f501e68a733c761c44bc287b24350"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1807.10910",
    "kind": "arxiv",
    "version": 1
  }
}