Pith Number

pith:NFHPH6SR

pith:2022:NFHPH6SR3G3KENPVPOU4OQZN7H

not attested not anchored not stored refs pending

Efficient Natural Gradient Descent Methods for Large-Scale PDE-Based Optimization Problems

Levon Nurbekyan, Wanzhou Lei, Yunan Yang

arxiv:2202.06236 v3 · 2022-02-13 · math.OC · cs.LG · cs.NA · 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{NFHPH6SR3G3KENPVPOU4OQZN7H}

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	2026-07-05T05:32:21.075064Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

694ef3fa51d9b6a235f57ba9c7432df9c7bf89c32a0beff4af5dadb624935383

Aliases

arxiv: 2202.06236 · arxiv_version: 2202.06236v3 · doi: 10.48550/arxiv.2202.06236 · pith_short_12: NFHPH6SR3G3K · pith_short_16: NFHPH6SR3G3KENPV · pith_short_8: NFHPH6SR

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/NFHPH6SR3G3KENPVPOU4OQZN7H \
  | 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: 694ef3fa51d9b6a235f57ba9c7432df9c7bf89c32a0beff4af5dadb624935383

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "9085d7f184248a1be88818bfc25720d70c57b09bb807dfcf0ee5f7b4e9a26f10",
    "cross_cats_sorted": [
      "cs.LG",
      "cs.NA",
      "math.NA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.OC",
    "submitted_at": "2022-02-13T07:32:17Z",
    "title_canon_sha256": "4b604166ae6ff3e5460dc40a7e8369653083364d551ebd21e0c70ee37077a76b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2202.06236",
    "kind": "arxiv",
    "version": 3
  }
}