Pith Number

pith:WLHWQMXP

pith:2015:WLHWQMXPWQVPYXVA3KFP2CZNP4

not attested not anchored not stored refs pending

A Matlab Tutorial for Diffusion-Convection-Reaction Equations using DGFEM

B\"ulent Karas\"ozen, Murat Uzunca

arxiv:1502.02941 v1 · 2015-02-10 · math.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{WLHWQMXPWQVPYXVA3KFP2CZNP4}

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	2026-05-18T02:27:30.304514Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b2cf6832efb42afc5ea0da8afd0b2d7f3bde1cf5c6b3ca264d9f62e6b19aff83

Aliases

arxiv: 1502.02941 · arxiv_version: 1502.02941v1 · doi: 10.48550/arxiv.1502.02941 · pith_short_12: WLHWQMXPWQVP · pith_short_16: WLHWQMXPWQVPYXVA · pith_short_8: WLHWQMXP

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/WLHWQMXPWQVPYXVA3KFP2CZNP4 \
  | 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: b2cf6832efb42afc5ea0da8afd0b2d7f3bde1cf5c6b3ca264d9f62e6b19aff83

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "192b13ea7b08481f4bc734237f319504c6e2fd7fa9e5430549a8965f0ab22cb5",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2015-02-10T15:16:20Z",
    "title_canon_sha256": "8e6f68cba9db06273a976c43c893a700970a1d51de804fd14b0c6b442eb05487"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1502.02941",
    "kind": "arxiv",
    "version": 1
  }
}