Pith Number

pith:VPI7SOAM

pith:2025:VPI7SOAMHAVBHLDIEARPHMP6OP

not attested not anchored not stored refs pending

Non-periodic Fourier propagation algorithms for partial differential equations

Channa Hatharasinghe, Jesse van Rhijn, Margaret D. Reid, Peter D. Drummond, Run Yan Teh

arxiv:2507.21757 v2 · 2025-07-29 · math.NA · cs.NA · math-ph · math.MP

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{VPI7SOAMHAVBHLDIEARPHMP6OP}

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	2026-06-04T01:08:30.605774Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

abd1f9380c382a13ac682022f3b1fe73e06ebe5c9a08390983d4430f53c3fd4d

Aliases

arxiv: 2507.21757 · arxiv_version: 2507.21757v2 · doi: 10.48550/arxiv.2507.21757 · pith_short_12: VPI7SOAMHAVB · pith_short_16: VPI7SOAMHAVBHLDI · pith_short_8: VPI7SOAM

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/VPI7SOAMHAVBHLDIEARPHMP6OP \
  | 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: abd1f9380c382a13ac682022f3b1fe73e06ebe5c9a08390983d4430f53c3fd4d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "6cc46597660b4795b577c663066ebd135169ce244fb52409111bcfc77475321d",
    "cross_cats_sorted": [
      "cs.NA",
      "math-ph",
      "math.MP"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2025-07-29T12:38:31Z",
    "title_canon_sha256": "68b3f39f49aa64d0469e118ae02480ce018cfdf1c649fba0065950a70e06da7c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2507.21757",
    "kind": "arxiv",
    "version": 2
  }
}