Pith Number

pith:WRA5QR2L

pith:2017:WRA5QR2LWWRNYLDSSG6XQRVWMA

not attested not anchored not stored refs pending

Space-Time Petrov-Galerkin FEM for Fractional Diffusion Problems

Bangti Jin, Beiping Duan, Joseph Pasciak, Raytcho Lazarov, Zhi Zhou

arxiv:1707.08057 v1 · 2017-07-25 · 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{WRA5QR2LWWRNYLDSSG6XQRVWMA}

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	2026-05-18T00:39:29.551394Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b441d8474bb5a2dc2c7291bd7846b660196f09c7635eea731e32809ad2afc8b7

Aliases

arxiv: 1707.08057 · arxiv_version: 1707.08057v1 · doi: 10.48550/arxiv.1707.08057 · pith_short_12: WRA5QR2LWWRN · pith_short_16: WRA5QR2LWWRNYLDS · pith_short_8: WRA5QR2L

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/WRA5QR2LWWRNYLDSSG6XQRVWMA \
  | 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: b441d8474bb5a2dc2c7291bd7846b660196f09c7635eea731e32809ad2afc8b7

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b250e2e4e14c610c2eb09769666ff2a6a7af4c7a31a1923a9ae9c2e129b03220",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2017-07-25T15:53:23Z",
    "title_canon_sha256": "af03dcd7227a334e2c3a6a12620d66ec9fb963cef62e7db84f61013551499c79"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1707.08057",
    "kind": "arxiv",
    "version": 1
  }
}