Pith Number

pith:K645V4X4

pith:2025:K645V4X4PYK5VQ6BJYJGODFNVP

not attested not anchored not stored refs pending

An optimal-transport finite-particle method for driven mass diffusion

Anna Pandolfi, Ignacio Romero, Michael Ortiz

arxiv:2503.02813 v1 · 2025-03-04 · 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{K645V4X4PYK5VQ6BJYJGODFNVP}

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	2026-07-05T10:24:14.328692Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

57b9daf2fc7e15dac3c14e12670cadabcae7c7d369d450afe62dda3ad6eb51e4

Aliases

arxiv: 2503.02813 · arxiv_version: 2503.02813v1 · doi: 10.48550/arxiv.2503.02813 · pith_short_12: K645V4X4PYK5 · pith_short_16: K645V4X4PYK5VQ6B · pith_short_8: K645V4X4

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/K645V4X4PYK5VQ6BJYJGODFNVP \
  | 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: 57b9daf2fc7e15dac3c14e12670cadabcae7c7d369d450afe62dda3ad6eb51e4

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e0298b403438d1ce371b5675414070b2f9bffc0809e75ddaa324d1cd52a51185",
    "cross_cats_sorted": [
      "cs.NA"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2025-03-04T17:38:24Z",
    "title_canon_sha256": "e282c209c4374f757bbdbf0e9f944a2a3c72f768989c155a91ccf222bf1b1e28"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2503.02813",
    "kind": "arxiv",
    "version": 1
  }
}