Pith Number

pith:4PWPYGDF

pith:2020:4PWPYGDFE5ZOO72TENMZLZVFYJ

not attested not anchored not stored refs pending

Inverse Problems, Deep Learning, and Symmetry Breaking

Chieh-Hsin Lai, Ju Sun, Kshitij Tayal, Vipin Kumar

arxiv:2003.09077 v1 · 2020-03-20 · cs.LG · cs.NA · eess.SP · math.NA · math.OC · stat.ML

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{4PWPYGDFE5ZOO72TENMZLZVFYJ}

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	2026-07-05T00:49:29.190449Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e3ecfc18652772e77f53235995e6a5c256fa94ced37218cc2add6581550681bf

Aliases

arxiv: 2003.09077 · arxiv_version: 2003.09077v1 · doi: 10.48550/arxiv.2003.09077 · pith_short_12: 4PWPYGDFE5ZO · pith_short_16: 4PWPYGDFE5ZOO72T · pith_short_8: 4PWPYGDF

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/4PWPYGDFE5ZOO72TENMZLZVFYJ \
  | 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: e3ecfc18652772e77f53235995e6a5c256fa94ced37218cc2add6581550681bf

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b89431b69e7ff4508f3978e3c6b3287f12f450e8ab63b1d595c81096af4bd864",
    "cross_cats_sorted": [
      "cs.NA",
      "eess.SP",
      "math.NA",
      "math.OC",
      "stat.ML"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.LG",
    "submitted_at": "2020-03-20T02:43:57Z",
    "title_canon_sha256": "f5d117c90e7fd2c16f420d376549d4819bf4817877bfebeaf1f0bf2fe0855112"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2003.09077",
    "kind": "arxiv",
    "version": 1
  }
}