Pith Number

pith:Z57XA25C

pith:2017:Z57XA25CNU3T3C7YWUYYDDSKET

not attested not anchored not stored refs pending

Error analysis of the L1 method on graded and uniform meshes for a fractional-derivative problem in two and three dimensions

Natalia Kopteva

arxiv:1709.09136 v6 · 2017-09-26 · math.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{Z57XA25CNU3T3C7YWUYYDDSKET}

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	2026-05-18T00:02:36.179760Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

cf7f706ba26d373d8bf8b531818e4a24d96fa44baed3baa9022e58c24bc8843a

Aliases

arxiv: 1709.09136 · arxiv_version: 1709.09136v6 · doi: 10.48550/arxiv.1709.09136 · pith_short_12: Z57XA25CNU3T · pith_short_16: Z57XA25CNU3T3C7Y · pith_short_8: Z57XA25C

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/Z57XA25CNU3T3C7YWUYYDDSKET \
  | 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: cf7f706ba26d373d8bf8b531818e4a24d96fa44baed3baa9022e58c24bc8843a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "71a47fe4f7b3c18b7023184195c9c584f14eabe144980a69c504c0e946e248ac",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2017-09-26T17:13:29Z",
    "title_canon_sha256": "a6d0532f021a4e3c5b96b9b0ee034d0816550f0c6645aef08e75eba6aa56ca03"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1709.09136",
    "kind": "arxiv",
    "version": 6
  }
}