Pith Number

pith:V6BYVLBR

pith:2023:V6BYVLBRA5QHE5IHDXTOLLQFTE

not attested not anchored not stored refs pending

A static memory sparse spectral method for time-fractional PDEs

Jos\'e A. Carrillo, Timon S. Gutleb

arxiv:2304.06855 v3 · 2023-04-13 · 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{V6BYVLBRA5QHE5IHDXTOLLQFTE}

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	2026-07-05T06:59:31.317517Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

af838aac3107607275071de6e5ae05991d1d33e4ef0fcce1506c66a0c11bc904

Aliases

arxiv: 2304.06855 · arxiv_version: 2304.06855v3 · doi: 10.48550/arxiv.2304.06855 · pith_short_12: V6BYVLBRA5QH · pith_short_16: V6BYVLBRA5QHE5IH · pith_short_8: V6BYVLBR

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/V6BYVLBRA5QHE5IHDXTOLLQFTE \
  | 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: af838aac3107607275071de6e5ae05991d1d33e4ef0fcce1506c66a0c11bc904

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ffc17cbede17c035d381acc40bb374a41877dca7c1aa11c8037a7ab1bf3e9455",
    "cross_cats_sorted": [
      "cs.NA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2023-04-13T22:50:58Z",
    "title_canon_sha256": "618515275764bb18850806004192cf10ab2a23679b8d4ea14a93acfc6c596d68"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2304.06855",
    "kind": "arxiv",
    "version": 3
  }
}