Pith Number

pith:XDCNAPZD

pith:2019:XDCNAPZDMLH3B6PKPVKXNA7EDY

not attested not anchored not stored refs pending

T-IFISS: a toolbox for adaptive FEM computation

Alex Bespalov, David Silvester, Leonardo Rocchi

arxiv:1908.05618 v2 · 2019-08-15 · 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{XDCNAPZDMLH3B6PKPVKXNA7EDY}

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	2026-07-05T00:46:47.650677Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b8c4d03f2362cfb0f9ea7d557683e41e3261b5e6ef0f2fcfbbe3880ead2785e8

Aliases

arxiv: 1908.05618 · arxiv_version: 1908.05618v2 · doi: 10.48550/arxiv.1908.05618 · pith_short_12: XDCNAPZDMLH3 · pith_short_16: XDCNAPZDMLH3B6PK · pith_short_8: XDCNAPZD

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/XDCNAPZDMLH3B6PKPVKXNA7EDY \
  | 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: b8c4d03f2362cfb0f9ea7d557683e41e3261b5e6ef0f2fcfbbe3880ead2785e8

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "597c4bb41ed23aefdb1c25315c9996964f28fa11d53281eef31bdf868c413e07",
    "cross_cats_sorted": [
      "cs.NA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2019-08-15T16:05:43Z",
    "title_canon_sha256": "e3fcae9a99b976460baeb827d87eecb0984c4438ed422f506f368be633ad75ee"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1908.05618",
    "kind": "arxiv",
    "version": 2
  }
}