Pith Number

pith:266OYJT5

pith:2025:266OYJT5YR5RSNM5JK23LXAMBT

not attested not anchored not stored refs pending

A Memory Efficient Adjoint Method to Enable Billion Parameter Optimization on a Single GPU in Dynamic Problems

L\'aszl\'o Kudela, Leon Herrmann, Stefan Kollmannsberger, Tim B\"urchner

arxiv:2509.15744 v1 · 2025-09-19 · cs.CE

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{266OYJT5YR5RSNM5JK23LXAMBT}

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	2026-07-07T02:19:40.801187Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d7bcec267dc47b19359d4ab5b5dc0c0cf3031a0d8a73ed36730f730c8f86b277

Aliases

arxiv: 2509.15744 · arxiv_version: 2509.15744v1 · doi: 10.48550/arxiv.2509.15744 · pith_short_12: 266OYJT5YR5R · pith_short_16: 266OYJT5YR5RSNM5 · pith_short_8: 266OYJT5

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/266OYJT5YR5RSNM5JK23LXAMBT \
  | 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: d7bcec267dc47b19359d4ab5b5dc0c0cf3031a0d8a73ed36730f730c8f86b277

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ccd33d92c01d4258653670f59fc035c1b7ac0c6e44ce3ad590d2473c2ce01293",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "cs.CE",
    "submitted_at": "2025-09-19T08:14:14Z",
    "title_canon_sha256": "2a69a4c3b237c22f363f429105bf1eefd7918f132b3901fdf360897965c0550d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2509.15744",
    "kind": "arxiv",
    "version": 1
  }
}