Pith Number

pith:KHUAS6L5

pith:2019:KHUAS6L57BUIOVT7K5PM2XACYK

not attested not anchored not stored refs pending

Numerical upscaling of perturbed diffusion problems

Axel M{\aa}lqvist, Fredrik Hellman, Tim Keil

arxiv:1908.00652 v1 · 2019-08-01 · 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{KHUAS6L57BUIOVT7K5PM2XACYK}

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	2026-07-05T02:00:29.205341Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

51e809797df86887567f575ecd5c02c2a57de88ac650f2841d829816bc0031f2

Aliases

arxiv: 1908.00652 · arxiv_version: 1908.00652v1 · doi: 10.48550/arxiv.1908.00652 · pith_short_12: KHUAS6L57BUI · pith_short_16: KHUAS6L57BUIOVT7 · pith_short_8: KHUAS6L5

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/KHUAS6L57BUIOVT7K5PM2XACYK \
  | 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: 51e809797df86887567f575ecd5c02c2a57de88ac650f2841d829816bc0031f2

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "9ee8b7adbff92a8fe5c1e5895be123d77b05b58dad7458e05f77ed49f991d4f3",
    "cross_cats_sorted": [
      "cs.NA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2019-08-01T22:52:59Z",
    "title_canon_sha256": "9b61f27feb591242e5231c531df475d307f3aeabd84f7402145fe2c45a7f97e8"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1908.00652",
    "kind": "arxiv",
    "version": 1
  }
}