Pith Number

pith:RDCHVJEH

pith:2019:RDCHVJEHXWWAV6I2CFGRZ7RZSQ

not attested not anchored not stored refs pending

Higher Steenrod squares for Khovanov homology

Federico Cantero Mor\'an

arxiv:1902.02839 v3 · 2019-02-07 · math.AT · math.GT

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{RDCHVJEHXWWAV6I2CFGRZ7RZSQ}

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	2026-05-17T23:48:30.585344Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

88c47aa487bdac0af91a114d1cfe3994167b555dec9034f58a6d897b2f77ebcf

Aliases

arxiv: 1902.02839 · arxiv_version: 1902.02839v3 · doi: 10.48550/arxiv.1902.02839 · pith_short_12: RDCHVJEHXWWA · pith_short_16: RDCHVJEHXWWAV6I2 · pith_short_8: RDCHVJEH

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/RDCHVJEHXWWAV6I2CFGRZ7RZSQ \
  | 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: 88c47aa487bdac0af91a114d1cfe3994167b555dec9034f58a6d897b2f77ebcf

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d19380e20d4cce53fa514e83772b1a1bff502faf4338f0c450da8d0bb1c8a60a",
    "cross_cats_sorted": [
      "math.GT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AT",
    "submitted_at": "2019-02-07T20:52:13Z",
    "title_canon_sha256": "f4a2ffb37470859f32578227b37daccc1dd6f0639bc940ebd4af86b243652c67"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1902.02839",
    "kind": "arxiv",
    "version": 3
  }
}