Pith Number

pith:3Q4DQXSN

pith:2019:3Q4DQXSNBFJKM54A55VJ67MIRJ

not attested not anchored not stored refs pending

Automatic Differentiation for Adjoint Stencil Loops

Fabio Luporini, Gerard Gorman, Jan H\"uckelheim, Navjot Kukreja, Paul Hovland, Sri Hari Krishna Narayanan

arxiv:1907.02818 v1 · 2019-07-05 · cs.DC · cs.LG · cs.PF · cs.SC

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{3Q4DQXSNBFJKM54A55VJ67MIRJ}

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	2026-05-17T23:41:22.993535Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

dc38385e4d0952a67780ef6a9f7d888a4dccb526069e6332fd3c20c2139de148

Aliases

arxiv: 1907.02818 · arxiv_version: 1907.02818v1 · doi: 10.48550/arxiv.1907.02818 · pith_short_12: 3Q4DQXSNBFJK · pith_short_16: 3Q4DQXSNBFJKM54A · pith_short_8: 3Q4DQXSN

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/3Q4DQXSNBFJKM54A55VJ67MIRJ \
  | 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: dc38385e4d0952a67780ef6a9f7d888a4dccb526069e6332fd3c20c2139de148

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "21a6d93992bc84eac4859664bd394c84d6b0b52c510a982e7000882affd629dc",
    "cross_cats_sorted": [
      "cs.LG",
      "cs.PF",
      "cs.SC"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DC",
    "submitted_at": "2019-07-05T13:33:34Z",
    "title_canon_sha256": "7081a4f5bd9bd1bdaf100993027e2ffb53825e7ae7d4d52962e22e3c419b33d7"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1907.02818",
    "kind": "arxiv",
    "version": 1
  }
}