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Everything about Sigma
Eighteenth letter of the Greek alphabet
Sigma is the eighteenth letter of the Greek alphabet. When it is used at the end of a letter-case word, the final form (ς) is used. In Ὀδυσσεύς (Odysseus), for example, the two lowercase sigmas (σ) in the center of the name are distinct from the word-final sigma (ς) at the end. Wikipedia →
🧭 Start here: a 6-step reading path
- Read the overview: SigmaA 5-minute orientation
- Skim a recent paper: Refinement mechanism of cerium addition on solidification structure and sigma phase of super austenitic stainless steel S32654Influential work since 2022
- Pick up a classic book: Lean Six Sigma For DummiesThe most-reprinted book on the subject
- Read the landmark paper: Continuum dynamics of the 1-D Heisenberg antiferromagnet: Identification with the O(3) nonlinear sigma modelCited 2,647 times
- Go sideways: EpsilonA closely related topic
- Go sideways: Pi (letter)A closely related topic
📖 Definitions
Noun The eighteenth letter of the Classical and Modern Greek alphabets (Σ, σ), the twentieth letter of Old and Ancient.
Noun The symbol Σ, used to indicate summation of a set or series.
Noun The symbol σ, used to indicate one standard deviation from the mean, particularly in a normal distribution.
Noun A sigma male (a self-reliant and assertive male).
🏆 Landmark papers (most cited)
Continuum dynamics of the 1-D Heisenberg antiferromagnet: Identification with the O(3) nonlinear sigma model
The Three Sigma Rule
Sigma-1 Receptor Chaperones at the ER- Mitochondrion Interface Regulate Ca2+ Signaling and Cell Survival
The 2 Sigma Problem: The Search for Methods of Group Instruction as Effective as One-to-One Tutoring
Carbon monoxide, carbon monosulfide, molecular nitrogen, phosphorus trifluoride, and methyl isocyanide as .sigma. donors and .pi. acceptors. A theoretical study by the Hartree-Fock-Slater transition-state method
Elution of proteins from sodium dodecyl sulfate-polyacrylamide gels, removal of sodium dodecyl sulfate, and renaturation of enzymatic activity: Results with sigma subunit of Escherichia coli RNA polymerase, wheat germ DNA topoisomerase, and other enzymes
Multiple Sigma Subunits and the Partitioning of Bacterial Transcription Space
STRUCTURE AND FUNCTION OF BACTERIAL SIGMA FACTORS
🆕 Influential since 2022
Refinement mechanism of cerium addition on solidification structure and sigma phase of super austenitic stainless steel S32654
Integration of Industry 4.0 technologies into Lean Six Sigma DMAIC: a systematic review
The evolution and future of lean Six Sigma 4.0
Green Lean Six Sigma for improving manufacturing sustainability: Framework development and validation
Analysis and Design of a Discrete-Time Delta-Sigma Modulator Using a Cascoded Floating-Inverter-Based Dynamic Amplifier
📚 Books worth reading
Lean Six Sigma For DummiesMartin Brenig-Jones · 2009
Project Management Best PracticesHarold Kerzner · 2008
The Six Sigma handbookThomas Pyzdek · 2000
Six sigma for dummiesCraig Gygi · 2005
Implementing Six Sigma and LeanRon Basu · 2009
Lean Six Sigma for the OfficeJames William Martin · 2008- 📕Lean six sigmaTerra Vanzant Stern · 2016
Six Sigma in HR transformationMircea Albeanu · 2010
Ranked by number of editions on Open Library, a rough measure of how lasting a book is.
🔗 Related topics
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- Phi Phi (/ˈfaɪ, ˈfiː/ FY, FEE; uppercase Φ, lowercase φ or ϕ; Ancient Greek: ϕεῖ pheî [pʰéî̯]; Modern Greek: φι fi [fi]) is the twenty-first letter of the…
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