Pith Number

pith:DFRT4HSG

pith:2021:DFRT4HSGJO4Q6MC57QSBMAJZ3N

not attested not anchored not stored refs pending

Learning without gradient descent encoded by the dynamics of a neurobiological model

Arkin Gupta, Bryan Tower, Christopher White, Gabriel A. Silva, Jonathan Larson, Shweti Mahajan, Vikash Morar, Vivek Kurien George, Weiwei Yang

arxiv:2103.08878 v2 · 2021-03-16 · cs.LG · cs.AI · 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{DFRT4HSGJO4Q6MC57QSBMAJZ3N}

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	2026-07-05T02:25:51.415586Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

19633e1e464bb90f305dfc24160139db432cc7b2b5a9b96f53d3a02431c2cc9f

Aliases

arxiv: 2103.08878 · arxiv_version: 2103.08878v2 · doi: 10.48550/arxiv.2103.08878 · pith_short_12: DFRT4HSGJO4Q · pith_short_16: DFRT4HSGJO4Q6MC5 · pith_short_8: DFRT4HSG

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/DFRT4HSGJO4Q6MC57QSBMAJZ3N \
  | 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: 19633e1e464bb90f305dfc24160139db432cc7b2b5a9b96f53d3a02431c2cc9f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "0e1a1ea517b0134c1c086b2a6f5375b27a61a3ff91cf8ea5b9a362c3b6d6cb44",
    "cross_cats_sorted": [
      "cs.AI",
      "cs.NE"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "cs.LG",
    "submitted_at": "2021-03-16T07:03:04Z",
    "title_canon_sha256": "51cc0aa46b9db3975ee1f1969212329e0b18ebb107c0d3f3c3ecf17335324c18"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2103.08878",
    "kind": "arxiv",
    "version": 2
  }
}