Pith Number

pith:W5LFMMTM

pith:2017:W5LFMMTM5ITNBMEUEELFIDDJY4

not attested not anchored not stored refs pending

Discrete least-squares finite element methods

Brendan Keith, Federico Fuentes, Leszek Demkowicz, Socratis Petrides

arxiv:1705.02078 v1 · 2017-05-05 · 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{W5LFMMTM5ITNBMEUEELFIDDJY4}

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	2026-05-18T00:28:35.500854Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b75656326cea26d0b0942116540c69c72142ff505069a14badd07dab2ebe0ca1

Aliases

arxiv: 1705.02078 · arxiv_version: 1705.02078v1 · doi: 10.48550/arxiv.1705.02078 · pith_short_12: W5LFMMTM5ITN · pith_short_16: W5LFMMTM5ITNBMEU · pith_short_8: W5LFMMTM

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/W5LFMMTM5ITNBMEUEELFIDDJY4 \
  | 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: b75656326cea26d0b0942116540c69c72142ff505069a14badd07dab2ebe0ca1

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "4dac25f69b1a40c1389c59a1bfc290eb4cbbb3ff15a2f802324602c74b20f404",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2017-05-05T03:47:23Z",
    "title_canon_sha256": "7991dde13d04c3f1869ad68503822c0294b649d58a354bc0056707333afaf947"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1705.02078",
    "kind": "arxiv",
    "version": 1
  }
}