Pith Number

pith:AAUTYHO2

pith:2020:AAUTYHO2YF2Z7RZHNQN7SADR4F

not attested not anchored not stored refs pending

SPAN: A Stochastic Projected Approximate Newton Method

Lei Li, Linyun Yu, Xianfeng Liang, Xunpeng Huang, Yitan Li, Yue Yu, Zhengyang Liu

arxiv:2002.03687 v2 · 2020-02-10 · math.OC · cs.LG

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{AAUTYHO2YF2Z7RZHNQN7SADR4F}

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	2026-07-05T00:45:23.090448Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

00293c1ddac1759fc7276c1bf90071e15500a17f538933b064a0114a8d2f375c

Aliases

arxiv: 2002.03687 · arxiv_version: 2002.03687v2 · doi: 10.48550/arxiv.2002.03687 · pith_short_12: AAUTYHO2YF2Z · pith_short_16: AAUTYHO2YF2Z7RZH · pith_short_8: AAUTYHO2

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/AAUTYHO2YF2Z7RZHNQN7SADR4F \
  | 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: 00293c1ddac1759fc7276c1bf90071e15500a17f538933b064a0114a8d2f375c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "9a1dcfcdcefb8e59184acb5f8118a710c1271afb553d53507298f5527ca64ed3",
    "cross_cats_sorted": [
      "cs.LG"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.OC",
    "submitted_at": "2020-02-10T12:42:42Z",
    "title_canon_sha256": "256c2e871c43a094a6592167f10b0256caecf9c7a8526bc07f84a46d56aef93f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2002.03687",
    "kind": "arxiv",
    "version": 2
  }
}