Pith Number

pith:B2C22YLP

pith:2025:B2C22YLPQQZVTMS52MV5BYTOPY

not attested not anchored not stored refs pending

Data assimilation in 2D nonlinear coupled sound and heat flow, using a stabilized explicit finite difference scheme marched backward in time

Alfred S. Carasso

arxiv:2501.14895 v1 · 2025-01-24 · 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{B2C22YLPQQZVTMS52MV5BYTOPY}

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	2026-07-05T10:05:20.371233Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

0e85ad616f843359b25dd32bd0e26e7e3a261ac405195c37eb2f8d59ce7315c4

Aliases

arxiv: 2501.14895 · arxiv_version: 2501.14895v1 · doi: 10.48550/arxiv.2501.14895 · pith_short_12: B2C22YLPQQZV · pith_short_16: B2C22YLPQQZVTMS5 · pith_short_8: B2C22YLP

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/B2C22YLPQQZVTMS52MV5BYTOPY \
  | 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: 0e85ad616f843359b25dd32bd0e26e7e3a261ac405195c37eb2f8d59ce7315c4

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "fcacd3741e51045428467d4f567d42955b2f5bbaa09a1c01ebd3914bba629de5",
    "cross_cats_sorted": [
      "cs.NA"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2025-01-24T19:34:47Z",
    "title_canon_sha256": "11c5d80e435ac8fd58c25df2e484a9822e02a7274e10b6d8dc5d519b71ddf7c4"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2501.14895",
    "kind": "arxiv",
    "version": 1
  }
}