Pith Number

pith:SDRENSMQ

pith:2010:SDRENSMQ2K5UYG4OZCAN3554LJ

not attested not anchored not stored refs pending

Enforcing the non-negativity constraint and maximum principles for diffusion with decay on general computational grids

H. Nagarajan, K. B. Nakshatrala

arxiv:1003.5257 v3 · 2010-03-27 · 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{SDRENSMQ2K5UYG4OZCAN3554LJ}

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	2026-05-18T02:08:16.554931Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

90e246c990d2bb4c1b8ec880ddf7bc5a50468a481a6df24ba98bf3cdfa4d856a

Aliases

arxiv: 1003.5257 · arxiv_version: 1003.5257v3 · doi: 10.48550/arxiv.1003.5257 · pith_short_12: SDRENSMQ2K5U · pith_short_16: SDRENSMQ2K5UYG4O · pith_short_8: SDRENSMQ

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/SDRENSMQ2K5UYG4OZCAN3554LJ \
  | 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: 90e246c990d2bb4c1b8ec880ddf7bc5a50468a481a6df24ba98bf3cdfa4d856a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "0641c9d3b1ca213737cc26af9e0a2e763571f1a3c30ee50e982f24f73d2a9b35",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.NA",
    "submitted_at": "2010-03-27T02:43:52Z",
    "title_canon_sha256": "28d06f71a8724e00b8688679e88f7b02df9ca2b683968d9b40773e86bb85a1c7"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1003.5257",
    "kind": "arxiv",
    "version": 3
  }
}