Pith Number

pith:Q2AXAOQO

pith:2019:Q2AXAOQO7ZIX2KGGPNIYAEGQD7

not attested not anchored not stored refs pending

A second-order accurate scheme for two-dimensional space fractional diffusion equations with time Caputo-Fabrizio fractional derivative

Jiankang Shi, Minghua Chen

arxiv:1903.02720 v1 · 2019-03-07 · 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{Q2AXAOQO7ZIX2KGGPNIYAEGQD7}

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	2026-06-04T20:13:58.856781Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

8681703a0efe517d28c67b518010d01fc092587249f8b6dfb431fba446ee4c03

Aliases

arxiv: 1903.02720 · arxiv_version: 1903.02720v1 · doi: 10.48550/arxiv.1903.02720 · pith_short_12: Q2AXAOQO7ZIX · pith_short_16: Q2AXAOQO7ZIX2KGG · pith_short_8: Q2AXAOQO

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/Q2AXAOQO7ZIX2KGGPNIYAEGQD7 \
  | 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: 8681703a0efe517d28c67b518010d01fc092587249f8b6dfb431fba446ee4c03

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "6299d673a2f1869e103c66dab53259bebcdeee34c97e0505045920b8a6e66fa9",
    "cross_cats_sorted": [
      "cs.NA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2019-03-07T04:17:08Z",
    "title_canon_sha256": "2c820f13943418ec5dbb6bcd275614f65c21255effbe480275b315a9c1736065"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1903.02720",
    "kind": "arxiv",
    "version": 1
  }
}