Pith Number

pith:YT53QHNM

pith:2018:YT53QHNMLPXQQ74PLDTTZTM2NB

not attested not anchored not stored refs pending

Machine-learning error models for approximate solutions to parameterized systems of nonlinear equations

Brian A. Freno, Kevin T. Carlberg

arxiv:1808.02097 v3 · 2018-08-06 · 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{YT53QHNMLPXQQ74PLDTTZTM2NB}

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	2026-05-17T23:53:57.581975Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c4fbb81dac5bef087f8f58e73ccd9a68715c8e25571ce38d184662577a9c728b

Aliases

arxiv: 1808.02097 · arxiv_version: 1808.02097v3 · doi: 10.48550/arxiv.1808.02097 · pith_short_12: YT53QHNMLPXQ · pith_short_16: YT53QHNMLPXQQ74P · pith_short_8: YT53QHNM

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/YT53QHNMLPXQQ74PLDTTZTM2NB \
  | 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: c4fbb81dac5bef087f8f58e73ccd9a68715c8e25571ce38d184662577a9c728b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "683dcd5dc69c01e8f1f173619ea0386eba8625d5bf2a76e47ce131d0b752a58e",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.NA",
    "submitted_at": "2018-08-06T20:17:20Z",
    "title_canon_sha256": "db1767af09f6b107953dd2b6784bdcbb749ed7b90f5e1e8e499cbb8c7fef172e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1808.02097",
    "kind": "arxiv",
    "version": 3
  }
}