Pith Number

pith:UNTVIXI4

pith:2024:UNTVIXI4ZIJ74WXFOLRYZU4E4V

not attested not anchored not stored refs pending

Structure-preserving model reduction of Hamiltonian systems by learning a symplectic autoencoder

F.K.J. Niggl

arxiv:2411.13906 v1 · 2024-11-21 · math.NA · cs.NA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{UNTVIXI4ZIJ74WXFOLRYZU4E4V}

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	2026-07-05T09:38:38.925673Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a367545d1cca13fe5ae572e38cd384e566438e22d4d5e9b5f9b88318903656b5

Aliases

arxiv: 2411.13906 · arxiv_version: 2411.13906v1 · doi: 10.48550/arxiv.2411.13906 · pith_short_12: UNTVIXI4ZIJ7 · pith_short_16: UNTVIXI4ZIJ74WXF · pith_short_8: UNTVIXI4

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/UNTVIXI4ZIJ74WXFOLRYZU4E4V \
  | 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: a367545d1cca13fe5ae572e38cd384e566438e22d4d5e9b5f9b88318903656b5

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c2699c98dc3f5348f908916ff5ff80958409b81c1fc4eb0189b243796fe3caef",
    "cross_cats_sorted": [
      "cs.NA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2024-11-21T07:37:07Z",
    "title_canon_sha256": "9db685fcd27fd0d54603d8e5b17a6bee919339d2c0416610030e32adb4aaea41"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2411.13906",
    "kind": "arxiv",
    "version": 1
  }
}