Pith Number

pith:WJICJYGT

pith:2023:WJICJYGTIUJYTZ4235GFGAQCUV

not attested not anchored not stored refs pending

Sparse Spectral Methods for Solving High-Dimensional and Multiscale Elliptic PDEs

Craig Gross, Mark Iwen

arxiv:2302.00752 v1 · 2023-02-01 · 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{WJICJYGTIUJYTZ4235GFGAQCUV}

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.

Cited by

1 paper in Pith

AM-PPO: (Advantage) Alpha-Modulation with Proximal Policy Optimization

Receipt and verification

First computed	2026-07-05T05:38:11.858436Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b25024e0d3451389e79adf4c530202a572999e3213dd4b3a0e5c5e4756965805

Aliases

arxiv: 2302.00752 · arxiv_version: 2302.00752v1 · doi: 10.48550/arxiv.2302.00752 · pith_short_12: WJICJYGTIUJY · pith_short_16: WJICJYGTIUJYTZ42 · pith_short_8: WJICJYGT

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/WJICJYGTIUJYTZ4235GFGAQCUV \
  | 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: b25024e0d3451389e79adf4c530202a572999e3213dd4b3a0e5c5e4756965805

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e0bd2dd0f11b3663b4a17cf26adc5a5e23d6387b86bd5dc7ceaab4817b673a19",
    "cross_cats_sorted": [
      "cs.NA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2023-02-01T20:55:38Z",
    "title_canon_sha256": "7739177f12789a8a097b7fcec7fcf6db5510c2b432e6c95cd0def97e31d360c2"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2302.00752",
    "kind": "arxiv",
    "version": 1
  }
}