Pith Number

pith:FUQHR6IU

pith:2015:FUQHR6IU4AXSEPQTCEQOCKGHTP

not attested not anchored not stored refs pending

An extension problem for the fractional derivative defined by Marchaud

Claudia Bucur, Fausto Ferrari

arxiv:1508.04156 v1 · 2015-08-17 · 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{FUQHR6IU4AXSEPQTCEQOCKGHTP}

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	2026-05-18T01:09:42.144219Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2d2078f914e02f223e131120e128c79be7d9f7969c7de4fa1216f85d5ba37ba2

Aliases

arxiv: 1508.04156 · arxiv_version: 1508.04156v1 · doi: 10.48550/arxiv.1508.04156 · pith_short_12: FUQHR6IU4AXS · pith_short_16: FUQHR6IU4AXSEPQT · pith_short_8: FUQHR6IU

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/FUQHR6IU4AXSEPQTCEQOCKGHTP \
  | 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: 2d2078f914e02f223e131120e128c79be7d9f7969c7de4fa1216f85d5ba37ba2

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "548b653d1b38cffa8d41d0813667dca4b8b877452310307b8b8a9de4af1e1127",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AP",
    "submitted_at": "2015-08-17T20:54:02Z",
    "title_canon_sha256": "41d702cea460b226a534b0c0b3116a4554fc2c050d6c29cc219088e2cef6237d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1508.04156",
    "kind": "arxiv",
    "version": 1
  }
}