Pith Number

pith:UPZ6TWBB

pith:2025:UPZ6TWBBZ3Y77MZP24WMSDHNW3

not attested not anchored not stored refs pending

Fully discrete error analysis of finite element discretizations of time-dependent Stokes equations in a stream-function formulation

Boris Vexler, Dmitriy Leykekhman, Jakob Wagner

arxiv:2508.06235 v4 · 2025-08-08 · 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{UPZ6TWBBZ3Y77MZP24WMSDHNW3}

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	2026-05-20T01:04:56.549207Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a3f3e9d821cef1ffb32fd72cc90cedb6e751453ed0bb136143a858cc6862922f

Aliases

arxiv: 2508.06235 · arxiv_version: 2508.06235v4 · doi: 10.48550/arxiv.2508.06235 · pith_short_12: UPZ6TWBBZ3Y7 · pith_short_16: UPZ6TWBBZ3Y77MZP · pith_short_8: UPZ6TWBB

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/UPZ6TWBBZ3Y77MZP24WMSDHNW3 \
  | 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: a3f3e9d821cef1ffb32fd72cc90cedb6e751453ed0bb136143a858cc6862922f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "86c9dd4e66ad07ee1e055425b3486084716b3fe2fd3687be2ae8babdd86f5766",
    "cross_cats_sorted": [
      "cs.NA"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2025-08-08T11:38:01Z",
    "title_canon_sha256": "610b1a5897bbb08a0505e78552f42942a380b59234e23f7b8240fac8b772ae63"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2508.06235",
    "kind": "arxiv",
    "version": 4
  }
}