Pith Number

pith:WPQJ35NF

pith:2019:WPQJ35NFCP5VCCZLWKTRONVN42

not attested not anchored not stored refs pending

A collocation method of lines for two-sided space-fractional advection-diffusion equations with variable coefficients

Delfim F. M. Torres, Hassan Khosravian-Arab, Mohammed K. Almoaeet, Mostafa Shamsi

arxiv:1902.09267 v1 · 2019-02-25 · math.NA · 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{WPQJ35NFCP5VCCZLWKTRONVN42}

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	2026-05-17T23:44:21.590660Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b3e09df5a513fb510b2bb2a71736ade6a019be5b3232973e2cecfe17b5b9886b

Aliases

arxiv: 1902.09267 · arxiv_version: 1902.09267v1 · doi: 10.48550/arxiv.1902.09267 · pith_short_12: WPQJ35NFCP5V · pith_short_16: WPQJ35NFCP5VCCZL · pith_short_8: WPQJ35NF

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/WPQJ35NFCP5VCCZLWKTRONVN42 \
  | 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: b3e09df5a513fb510b2bb2a71736ade6a019be5b3232973e2cecfe17b5b9886b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f56aeb0cbb9627d8189b4ce870df5e07d87469f4eef010c1c88a560ae5b0e754",
    "cross_cats_sorted": [
      "math.AP"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2019-02-25T14:02:09Z",
    "title_canon_sha256": "307a2a611ebea0e36fc374cc1ed3e5b1624a40dbae2deb7c0b1f8cab4c9af3f1"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1902.09267",
    "kind": "arxiv",
    "version": 1
  }
}