Pith Number

pith:V2JMS46U

pith:2026:V2JMS46UVGEGP5GUPBQ4CLQWEL

not attested not anchored not stored refs pending

Efficient Krylov solvers for inverse source problem in 2D space-time fractional diffusion equation

Asim Ilyas, Stefano Serra-Capizzano

arxiv:2606.25520 v1 · 2026-06-24 · math.NA · 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{V2JMS46UVGEGP5GUPBQ4CLQWEL}

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	2026-06-25T01:18:07.721422Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ae92c973d4a98867f4d47861c12e1622f7261f535b68daf80eebca6c29ff4221

Aliases

arxiv: 2606.25520 · arxiv_version: 2606.25520v1 · doi: 10.48550/arxiv.2606.25520 · pith_short_12: V2JMS46UVGEG · pith_short_16: V2JMS46UVGEGP5GU · pith_short_8: V2JMS46U

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/V2JMS46UVGEGP5GUPBQ4CLQWEL \
  | 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: ae92c973d4a98867f4d47861c12e1622f7261f535b68daf80eebca6c29ff4221

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "45820aa85a19615599917ad2ca7d827aa867098618901434e7705b35b2328ca8",
    "cross_cats_sorted": [
      "cs.NA"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2026-06-24T07:55:49Z",
    "title_canon_sha256": "e286ca8f4a24a8276723cf71fcf66cdc8b3482197858b242952377114eeba9d3"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2606.25520",
    "kind": "arxiv",
    "version": 1
  }
}