Pith Number

pith:KLGV3FKC

pith:2022:KLGV3FKCJKJW7WLG5RUQJNX3UI

not attested not anchored not stored refs pending

Model Order Reduction of The Time-Dependent Advection-Diffusion-Reaction Equation with Time-Varying Coefficients: Application to Real-Time Water Quality Monitoring

Ahmed Elkhashap, Dirk Abel

arxiv:2201.01546 v2 · 2022-01-05 · eess.SY · cs.SY

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{KLGV3FKCJKJW7WLG5RUQJNX3UI}

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	2026-07-05T04:09:00.980253Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

52cd5d95424a936fd966ec6904b6fba208f92d6ffde3b4ba828d29b2073f6356

Aliases

arxiv: 2201.01546 · arxiv_version: 2201.01546v2 · doi: 10.48550/arxiv.2201.01546 · pith_short_12: KLGV3FKCJKJW · pith_short_16: KLGV3FKCJKJW7WLG · pith_short_8: KLGV3FKC

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/KLGV3FKCJKJW7WLG5RUQJNX3UI \
  | 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: 52cd5d95424a936fd966ec6904b6fba208f92d6ffde3b4ba828d29b2073f6356

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "6f3aedb5ee0e6949b93d81d3164b0e67c639eeb780fc218e1af608523820766c",
    "cross_cats_sorted": [
      "cs.SY"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "eess.SY",
    "submitted_at": "2022-01-05T11:13:15Z",
    "title_canon_sha256": "ac82eb809e7d5115f9fcd27b5e6a14697a96e709287a6eecb1f0f09ce3b82d73"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2201.01546",
    "kind": "arxiv",
    "version": 2
  }
}