Pith Number

pith:HGM5L6AS

pith:2015:HGM5L6ASZJXMGKYMXBTC2DII3I

not attested not anchored not stored refs pending

Sparse-promoting Full Waveform Inversion based on Online Orthonormal Dictionary Learning

Entao Liu, James H. McClellan, Lingchen Zhu

arxiv:1511.05194 v2 · 2015-11-16 · physics.geo-ph · 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{HGM5L6ASZJXMGKYMXBTC2DII3I}

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	2026-05-18T01:00:12.693362Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

3999d5f812ca6ec32b0cb8662d0d08da07886430c704089223973483afa811b5

Aliases

arxiv: 1511.05194 · arxiv_version: 1511.05194v2 · doi: 10.48550/arxiv.1511.05194 · pith_short_12: HGM5L6ASZJXM · pith_short_16: HGM5L6ASZJXMGKYM · pith_short_8: HGM5L6AS

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/HGM5L6ASZJXMGKYMXBTC2DII3I \
  | 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: 3999d5f812ca6ec32b0cb8662d0d08da07886430c704089223973483afa811b5

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2e9b7f532f4945481cca8a1dde9c75469d462c414f9f8c85058703c5c45fda24",
    "cross_cats_sorted": [
      "cs.LG",
      "cs.NA",
      "math.NA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.geo-ph",
    "submitted_at": "2015-11-16T21:50:48Z",
    "title_canon_sha256": "1340159eaef0e44bd17f86e15b71ceaf20c9660e169c90e3f7bcaf47082eca35"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1511.05194",
    "kind": "arxiv",
    "version": 2
  }
}