Pith Number

pith:SLWL2M67

pith:2020:SLWL2M67O6P5MLN5F3L2YVKPZL

not attested not anchored not stored refs pending

Chordal Decomposition for Spectral Coarsening

Alec Jacobson, David I.W. Levin, Honglin Chen, Hsueh-Ti Derek Liu

arxiv:2009.02294 v2 · 2020-09-04 · cs.GR

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{SLWL2M67O6P5MLN5F3L2YVKPZL}

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	2026-07-05T01:35:11.663565Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

92ecbd33df779fd62dbd2ed7ac554fcac04586dd1b89464f823ce83f6452e492

Aliases

arxiv: 2009.02294 · arxiv_version: 2009.02294v2 · doi: 10.48550/arxiv.2009.02294 · pith_short_12: SLWL2M67O6P5 · pith_short_16: SLWL2M67O6P5MLN5 · pith_short_8: SLWL2M67

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/SLWL2M67O6P5MLN5F3L2YVKPZL \
  | 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: 92ecbd33df779fd62dbd2ed7ac554fcac04586dd1b89464f823ce83f6452e492

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "9802a0016f30b983aef7d1aabb2ef5dc6f7c06327a57b950f04d8568621f6ca4",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.GR",
    "submitted_at": "2020-09-04T16:43:30Z",
    "title_canon_sha256": "49e4309da4978243d5af07df8ad0a3f3fd3fb69ba21411098d464673a93e774e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2009.02294",
    "kind": "arxiv",
    "version": 2
  }
}