Pith Number

pith:XBPGCKC2

pith:2018:XBPGCKC2MFXN4DJEPDVC4PGBE5

not attested not anchored not stored refs pending

Towards the optimal construction of a loss function without spurious local minima for solving quadratic equations

Jian-Feng Cai, Ke Wei, Zhenzhen Li

arxiv:1809.10520 v4 · 2018-09-27 · cs.IT · math.IT

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{XBPGCKC2MFXN4DJEPDVC4PGBE5}

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	2026-07-05T00:17:24.885162Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b85e61285a616ede0d2478ea2e3cc12750c05abf6c9ab01620379ed01cf10654

Aliases

arxiv: 1809.10520 · arxiv_version: 1809.10520v4 · doi: 10.48550/arxiv.1809.10520 · pith_short_12: XBPGCKC2MFXN · pith_short_16: XBPGCKC2MFXN4DJE · pith_short_8: XBPGCKC2

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/XBPGCKC2MFXN4DJEPDVC4PGBE5 \
  | 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: b85e61285a616ede0d2478ea2e3cc12750c05abf6c9ab01620379ed01cf10654

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "80db216f92e014ce1a488db98b60b6394252de969711041b29c93611774d291b",
    "cross_cats_sorted": [
      "math.IT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.IT",
    "submitted_at": "2018-09-27T13:59:38Z",
    "title_canon_sha256": "c1628c8acd8b8231b076cbbefb3576903b2227d71134e2273d8ac35cfeac60a0"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1809.10520",
    "kind": "arxiv",
    "version": 4
  }
}