Pith Number

pith:QOV27F7I

pith:2019:QOV27F7IBWYB6QEMCRZI5BH7FC

not attested not anchored not stored refs pending

Approximation of a fractional power of an elliptic operator

Petr N. Vabishchevich

arxiv:1905.10838 v1 · 2019-05-26 · cs.NA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{QOV27F7IBWYB6QEMCRZI5BH7FC}

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	2026-05-17T23:45:03.620748Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

83abaf97e80db01f408c14728e84ff288dca77ef7ed782d2108cf691390a17e0

Aliases

arxiv: 1905.10838 · arxiv_version: 1905.10838v1 · doi: 10.48550/arxiv.1905.10838 · pith_short_12: QOV27F7IBWYB · pith_short_16: QOV27F7IBWYB6QEM · pith_short_8: QOV27F7I

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/QOV27F7IBWYB6QEMCRZI5BH7FC \
  | 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: 83abaf97e80db01f408c14728e84ff288dca77ef7ed782d2108cf691390a17e0

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "5c24b97622a6035c1e3ae5adceeb004c67478de21898136aecf88a6c1a24408a",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.NA",
    "submitted_at": "2019-05-26T17:10:45Z",
    "title_canon_sha256": "3cbc452593bc9c72e6d69936dd4f019c459dd90d8704822ccf85ca3cbe8c8cb5"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1905.10838",
    "kind": "arxiv",
    "version": 1
  }
}