Pith Number

pith:UKI6KZWT

pith:2020:UKI6KZWTYIARFRLQP3P42DG2MY

not attested not anchored not stored refs pending

A Space-Time DPG Method for the Heat Equation

Johannes Storn, Lars Diening

arxiv:2012.13229 v2 · 2020-12-24 · 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{UKI6KZWTYIARFRLQP3P42DG2MY}

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	2026-07-05T02:50:08.569684Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a291e566d3c20112c5707edfcd0cda66027926edd60eef25987eea96e23cb3d5

Aliases

arxiv: 2012.13229 · arxiv_version: 2012.13229v2 · doi: 10.48550/arxiv.2012.13229 · pith_short_12: UKI6KZWTYIAR · pith_short_16: UKI6KZWTYIARFRLQ · pith_short_8: UKI6KZWT

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/UKI6KZWTYIARFRLQP3P42DG2MY \
  | 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: a291e566d3c20112c5707edfcd0cda66027926edd60eef25987eea96e23cb3d5

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "27c96507d1590f7703ccc91787880d88b6451c83098af9da132bf1e93719eda5",
    "cross_cats_sorted": [
      "cs.NA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NA",
    "submitted_at": "2020-12-24T12:49:59Z",
    "title_canon_sha256": "897878ad73db394f4b04d134f81b119ae58f64c6d8ffbc7fa4dec4fb84901b9f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2012.13229",
    "kind": "arxiv",
    "version": 2
  }
}