Pith Number

pith:ZKTXUE4Y

pith:2018:ZKTXUE4YIDKPFI5PT4G7Z6EZ6K

not attested not anchored not stored refs pending

An Explicit Neural Network Construction for Piecewise Constant Function Approximation

Dongbin Xiu, Kailiang Wu

arxiv:1808.07390 v1 · 2018-08-22 · math.NA · cs.LG · cs.NA · cs.NE

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{ZKTXUE4YIDKPFI5PT4G7Z6EZ6K}

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	2026-05-18T00:07:28.999861Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

caa77a139840d4f2a3af9f0dfcf899f29fc34b4d96c26b91c04f5d42f4e1ccbb

Aliases

arxiv: 1808.07390 · arxiv_version: 1808.07390v1 · doi: 10.48550/arxiv.1808.07390 · pith_short_12: ZKTXUE4YIDKP · pith_short_16: ZKTXUE4YIDKPFI5P · pith_short_8: ZKTXUE4Y

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/ZKTXUE4YIDKPFI5PT4G7Z6EZ6K \
  | 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: caa77a139840d4f2a3af9f0dfcf899f29fc34b4d96c26b91c04f5d42f4e1ccbb

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "90cb3565fc2b1ed1f599b7c35721ea90e7e02f76d80199b28f4ba495e1eee5b3",
    "cross_cats_sorted": [
      "cs.LG",
      "cs.NA",
      "cs.NE"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2018-08-22T14:45:46Z",
    "title_canon_sha256": "31b483cb7e72d9da5049a91ae3d9e892ddf296bf5829d9e0019ba65fb09a8499"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1808.07390",
    "kind": "arxiv",
    "version": 1
  }
}