Pith Number

pith:PGDNR43T

pith:2012:PGDNR43T6UV7UAWXCBSB6VPUA7

not attested not anchored not stored refs pending

An exponential fitting scheme for general convection-diffusion equations on tetrahedral meshes

Ludmil T. Zikatanov, Raytcho D. Lazarov

arxiv:1211.0869 v2 · 2012-11-05 · math.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{PGDNR43T6UV7UAWXCBSB6VPUA7}

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	2026-05-18T03:41:28.813640Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7986d8f373f52bfa02d710641f55f407fe9e500f077c01c30fe1c1a1134bbace

Aliases

arxiv: 1211.0869 · arxiv_version: 1211.0869v2 · doi: 10.48550/arxiv.1211.0869 · pith_short_12: PGDNR43T6UV7 · pith_short_16: PGDNR43T6UV7UAWX · pith_short_8: PGDNR43T

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/PGDNR43T6UV7UAWXCBSB6VPUA7 \
  | 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: 7986d8f373f52bfa02d710641f55f407fe9e500f077c01c30fe1c1a1134bbace

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "4a3a874ec7461754135a87b57ed9489535c000b961232da87aad1d66131da2d7",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2012-11-05T14:11:12Z",
    "title_canon_sha256": "b92389cf133d5e9e72a2c990fa08ae1ad704aa58737f25a79ce636c8a8821b58"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1211.0869",
    "kind": "arxiv",
    "version": 2
  }
}