Pith Number

pith:PYVXINI4

pith:2012:PYVXINI4TIFUO5P7PEXKOMBLRP

not attested not anchored not stored refs pending

Convergence of adaptive FEM for some elliptic obstacle problem with inhomogeneous Dirichlet data

Dirk Praetorius, Marcus Page, Michael Feischl

arxiv:1207.3257 v2 · 2012-07-13 · 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{PYVXINI4TIFUO5P7PEXKOMBLRP}

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	2026-05-18T02:59:45.136744Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7e2b74351c9a0b4775ff792ea7302b8bd4ce642929795f66927722d1da08974a

Aliases

arxiv: 1207.3257 · arxiv_version: 1207.3257v2 · doi: 10.48550/arxiv.1207.3257 · pith_short_12: PYVXINI4TIFU · pith_short_16: PYVXINI4TIFUO5P7 · pith_short_8: PYVXINI4

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/PYVXINI4TIFUO5P7PEXKOMBLRP \
  | 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: 7e2b74351c9a0b4775ff792ea7302b8bd4ce642929795f66927722d1da08974a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "710f4e467d1011f26d611b401ef26da2b5b22883977353e649b04cc42c56af10",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2012-07-13T14:15:18Z",
    "title_canon_sha256": "c88f8a72a99eb22366f529eba0afdbf09417ac33d33f4702adedb59e17cda1cd"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1207.3257",
    "kind": "arxiv",
    "version": 2
  }
}