Pith Number

pith:UJ6QR7FV

pith:2019:UJ6QR7FVKYYPYO7OOTISZQMMYA

not attested not anchored not stored refs pending

A linearized energy--conservative finite element method for the nonlinear Schr\"{o}dinger equation with wave operator

Dongdong He, Kejia Pan, Wentao Cai

arxiv:1902.08487 v1 · 2019-02-22 · math.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{UJ6QR7FVKYYPYO7OOTISZQMMYA}

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	2026-05-17T23:52:57.082692Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a27d08fcb55630fc3bee74d12cc18cc03b117213e72eb51ea419540f5b2b1a9a

Aliases

arxiv: 1902.08487 · arxiv_version: 1902.08487v1 · doi: 10.48550/arxiv.1902.08487 · pith_short_12: UJ6QR7FVKYYP · pith_short_16: UJ6QR7FVKYYPYO7O · pith_short_8: UJ6QR7FV

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/UJ6QR7FVKYYPYO7OOTISZQMMYA \
  | 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: a27d08fcb55630fc3bee74d12cc18cc03b117213e72eb51ea419540f5b2b1a9a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "383feb5b4b69a50787833e2626c953f157e0c3dd452da5ca44692a9008411d85",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2019-02-22T13:40:56Z",
    "title_canon_sha256": "ca9cf1d8d93d608ab380e4f0b1977253eae3e1b7f48d42d154befc57c108df1b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1902.08487",
    "kind": "arxiv",
    "version": 1
  }
}